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What materials would I use to build an underwater city?



The Next CEO of Stack OverflowCity in the wake of the Yggdrasil: Engineering ConsiderationsWhat would the fortifications of an underwater city look like?What kind of city would cephalopod aliens build for their gods?Forging metal under water, using thermiteAre there any structural materials suitable for production underwater?Floor Material: What would mer-society like to use for comfortable floors?What phonemes are most recognizable underwater?What would aliens use as raw materials?How would a colossal explosion affect an ocean-based planet?What are the architectural considerations when an underwater species builds a city?










2












$begingroup$


I'm currently trying to set up an underwater race in my world—merpeople if you will—and I'm trying to figure out how their city would look. I'm basing their religion and lifestyle on native civilizations such as Inuits, or some Native American tribes, but I also want them to be sedentary. What materials available in the deep waters could be used to make houses?










share|improve this question









New contributor




Chloé B is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.







$endgroup$











  • $begingroup$
    What do you want the houses to be like, and what are they to be used for? Do they use them only to hide their young from predators, or do they watch Sea-TV on their kelp sofas, grabbing fizzy drinks from a fridge?
    $endgroup$
    – Cyrus
    4 hours ago










  • $begingroup$
    Welcome to Worldbuilding.SE! We're glad you could join us! When you have a moment, please click here to learn more about our culture and take our tour. Thanks!
    $endgroup$
    – JBH
    2 hours ago















2












$begingroup$


I'm currently trying to set up an underwater race in my world—merpeople if you will—and I'm trying to figure out how their city would look. I'm basing their religion and lifestyle on native civilizations such as Inuits, or some Native American tribes, but I also want them to be sedentary. What materials available in the deep waters could be used to make houses?










share|improve this question









New contributor




Chloé B is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.







$endgroup$











  • $begingroup$
    What do you want the houses to be like, and what are they to be used for? Do they use them only to hide their young from predators, or do they watch Sea-TV on their kelp sofas, grabbing fizzy drinks from a fridge?
    $endgroup$
    – Cyrus
    4 hours ago










  • $begingroup$
    Welcome to Worldbuilding.SE! We're glad you could join us! When you have a moment, please click here to learn more about our culture and take our tour. Thanks!
    $endgroup$
    – JBH
    2 hours ago













2












2








2





$begingroup$


I'm currently trying to set up an underwater race in my world—merpeople if you will—and I'm trying to figure out how their city would look. I'm basing their religion and lifestyle on native civilizations such as Inuits, or some Native American tribes, but I also want them to be sedentary. What materials available in the deep waters could be used to make houses?










share|improve this question









New contributor




Chloé B is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.







$endgroup$




I'm currently trying to set up an underwater race in my world—merpeople if you will—and I'm trying to figure out how their city would look. I'm basing their religion and lifestyle on native civilizations such as Inuits, or some Native American tribes, but I also want them to be sedentary. What materials available in the deep waters could be used to make houses?







materials architecture underwater merfolk






share|improve this question









New contributor




Chloé B is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











share|improve this question









New contributor




Chloé B is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.









share|improve this question




share|improve this question








edited 3 hours ago









Cyn

10.7k12348




10.7k12348






New contributor




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Check out our Code of Conduct.









asked 4 hours ago









Chloé BChloé B

111




111




New contributor




Chloé B is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.





New contributor





Chloé B is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.






Chloé B is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











  • $begingroup$
    What do you want the houses to be like, and what are they to be used for? Do they use them only to hide their young from predators, or do they watch Sea-TV on their kelp sofas, grabbing fizzy drinks from a fridge?
    $endgroup$
    – Cyrus
    4 hours ago










  • $begingroup$
    Welcome to Worldbuilding.SE! We're glad you could join us! When you have a moment, please click here to learn more about our culture and take our tour. Thanks!
    $endgroup$
    – JBH
    2 hours ago
















  • $begingroup$
    What do you want the houses to be like, and what are they to be used for? Do they use them only to hide their young from predators, or do they watch Sea-TV on their kelp sofas, grabbing fizzy drinks from a fridge?
    $endgroup$
    – Cyrus
    4 hours ago










  • $begingroup$
    Welcome to Worldbuilding.SE! We're glad you could join us! When you have a moment, please click here to learn more about our culture and take our tour. Thanks!
    $endgroup$
    – JBH
    2 hours ago















$begingroup$
What do you want the houses to be like, and what are they to be used for? Do they use them only to hide their young from predators, or do they watch Sea-TV on their kelp sofas, grabbing fizzy drinks from a fridge?
$endgroup$
– Cyrus
4 hours ago




$begingroup$
What do you want the houses to be like, and what are they to be used for? Do they use them only to hide their young from predators, or do they watch Sea-TV on their kelp sofas, grabbing fizzy drinks from a fridge?
$endgroup$
– Cyrus
4 hours ago












$begingroup$
Welcome to Worldbuilding.SE! We're glad you could join us! When you have a moment, please click here to learn more about our culture and take our tour. Thanks!
$endgroup$
– JBH
2 hours ago




$begingroup$
Welcome to Worldbuilding.SE! We're glad you could join us! When you have a moment, please click here to learn more about our culture and take our tour. Thanks!
$endgroup$
– JBH
2 hours ago










4 Answers
4






active

oldest

votes


















1












$begingroup$

Assuming the mer-people can breathe through water, and mirroring Native American style homes, then it would be practical to form homes out of sedimentary rocks at the bottom of the sea. These would likely resemble the homes of cliff dwellers or adobe-style homes.



Most rock at the bottom of the sea is sedimentary; this makes it dense and hard. A creature advanced enough, with the intelligence of human civilization, could go through the stone age with tools available in the ocean, and using such tools chisel out homes out of the rock formations at the bottom of the sea. It would not be too far off from Native American style homes.



As far as the Inuits that you mention, the Igloo Construction would be a better shape for the water pressure of the ocean, but would probably be easier made as being chiselled-out into the stone (like the cliff dwellers), as mining rock only to re-form it would be difficult, especially because any type of mortar would be difficult (but not impossible) to make inside water.






share|improve this answer









$endgroup$












  • $begingroup$
    Actually most of the bottom of the sea is mud. Sedimentary rocks form when pressure is high enough to consolidate the loose grains.
    $endgroup$
    – L.Dutch
    4 hours ago










  • $begingroup$
    That's kinda what I was thinking as well, but wouldn't that stone made by high-pressure require extreme strenght to use? I really like the idea of a city carved in, Arizona cliff-dweller style, but I wonder if it would be possible on the stone found in deep waters? Most cliff-dweller cities are carved in soft stone, if I'm not mistaken.
    $endgroup$
    – Chloé B
    3 hours ago










  • $begingroup$
    @ChloéB difficult, but possible
    $endgroup$
    – cegfault
    3 hours ago


















1












$begingroup$

Cegfault took the most obvious material: stone. Let me offer a couple more.



Coral



Houses could be grown through coral polyp husbandry. Officially, the material is calcium carbonate. Houses of nearly any size could be made through this method, though is would be slow. However, with a bit of engineering, walls, floors, and roofs can be built this way. Thick coral would be a reasonable protection from break-in.



Kelp and sea grass



Agriculture isn't just for food! Cultivated sea grasses could be planted, and woven as they grow to create sturdy walls. This solution would be excellent for tipi style domiciles. Or, if weaving walls isn't your cup of tea, you could cultivate personal groves of sea grass, then trim a path into the grove and rooms within the grove (think "corn maze").



Caves in ocean trenches



There are oceanic trenches all over the planet. The wonderful thing about trenches, is that they provides sides. Especially the deep ones. Caves can be hewn out of the sides. Hole households could be inside, so long as the local current isn't so strong that it can erode the cave mouth. This solution would work anywhere there was a reasonably steep, somewhat verticalish surface (the sides of volcanic mountains are especially prized for their central heating).






share|improve this answer









$endgroup$




















    1












    $begingroup$

    I like the Coral husbandry of JBH and carving out of cave/cliff walls. But I can add one more option.



    A civilization may advance to a point where they need to use energy sources. Best energy source maybe geothermal vents and underwater volcanoes. this could provide energy for future technological development.



    Now if your "merfolk" could harness this, they would build structures around these energy sources, maybe control the spewing lava to form the structure around it. So, you could create an igneous rock/obsidian structure.



    You could augment these structures with other building materials. Unfortunately, where you would find these energy source may not be where you would also find coral or sea grasses. Sedimentary rock, such as sandstone would be readily available, or any other strong and tough rock that would hold up to currents, external forces and quakes that would most definitely accompany a volcano.



    Maybe you can control the water chemistry enough to grow massive salt crystals to incorporate into your structures. This would be decorative in nature only and would be fairly difficult to do in this environment, but would make a great "temple" of some kind if your civilization advanced to a Aztec level society.






    share|improve this answer









    $endgroup$




















      1












      $begingroup$

      Whalebone.



      Those bones are big. They can be found on the ocean floor.



      whale fall
      https://en.wikipedia.org/wiki/Whale_fall



      Ancient Siberians made huts out of mammoth bones.
      source
      mammoth bone hut



      And people do make huts out of whalebone found on the beach.
      https://www.pinterest.com/pin/223280094000002936
      whalebone hut



      Probably there would be a lot more whale bones available to your merpeople than can be found on land. Plus bone huts offer fun writing possibilities. Besides whalebones, there can be other comparably large or larger bones used to make the buildings...






      share|improve this answer









      $endgroup$













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        4 Answers
        4






        active

        oldest

        votes








        4 Answers
        4






        active

        oldest

        votes









        active

        oldest

        votes






        active

        oldest

        votes









        1












        $begingroup$

        Assuming the mer-people can breathe through water, and mirroring Native American style homes, then it would be practical to form homes out of sedimentary rocks at the bottom of the sea. These would likely resemble the homes of cliff dwellers or adobe-style homes.



        Most rock at the bottom of the sea is sedimentary; this makes it dense and hard. A creature advanced enough, with the intelligence of human civilization, could go through the stone age with tools available in the ocean, and using such tools chisel out homes out of the rock formations at the bottom of the sea. It would not be too far off from Native American style homes.



        As far as the Inuits that you mention, the Igloo Construction would be a better shape for the water pressure of the ocean, but would probably be easier made as being chiselled-out into the stone (like the cliff dwellers), as mining rock only to re-form it would be difficult, especially because any type of mortar would be difficult (but not impossible) to make inside water.






        share|improve this answer









        $endgroup$












        • $begingroup$
          Actually most of the bottom of the sea is mud. Sedimentary rocks form when pressure is high enough to consolidate the loose grains.
          $endgroup$
          – L.Dutch
          4 hours ago










        • $begingroup$
          That's kinda what I was thinking as well, but wouldn't that stone made by high-pressure require extreme strenght to use? I really like the idea of a city carved in, Arizona cliff-dweller style, but I wonder if it would be possible on the stone found in deep waters? Most cliff-dweller cities are carved in soft stone, if I'm not mistaken.
          $endgroup$
          – Chloé B
          3 hours ago










        • $begingroup$
          @ChloéB difficult, but possible
          $endgroup$
          – cegfault
          3 hours ago















        1












        $begingroup$

        Assuming the mer-people can breathe through water, and mirroring Native American style homes, then it would be practical to form homes out of sedimentary rocks at the bottom of the sea. These would likely resemble the homes of cliff dwellers or adobe-style homes.



        Most rock at the bottom of the sea is sedimentary; this makes it dense and hard. A creature advanced enough, with the intelligence of human civilization, could go through the stone age with tools available in the ocean, and using such tools chisel out homes out of the rock formations at the bottom of the sea. It would not be too far off from Native American style homes.



        As far as the Inuits that you mention, the Igloo Construction would be a better shape for the water pressure of the ocean, but would probably be easier made as being chiselled-out into the stone (like the cliff dwellers), as mining rock only to re-form it would be difficult, especially because any type of mortar would be difficult (but not impossible) to make inside water.






        share|improve this answer









        $endgroup$












        • $begingroup$
          Actually most of the bottom of the sea is mud. Sedimentary rocks form when pressure is high enough to consolidate the loose grains.
          $endgroup$
          – L.Dutch
          4 hours ago










        • $begingroup$
          That's kinda what I was thinking as well, but wouldn't that stone made by high-pressure require extreme strenght to use? I really like the idea of a city carved in, Arizona cliff-dweller style, but I wonder if it would be possible on the stone found in deep waters? Most cliff-dweller cities are carved in soft stone, if I'm not mistaken.
          $endgroup$
          – Chloé B
          3 hours ago










        • $begingroup$
          @ChloéB difficult, but possible
          $endgroup$
          – cegfault
          3 hours ago













        1












        1








        1





        $begingroup$

        Assuming the mer-people can breathe through water, and mirroring Native American style homes, then it would be practical to form homes out of sedimentary rocks at the bottom of the sea. These would likely resemble the homes of cliff dwellers or adobe-style homes.



        Most rock at the bottom of the sea is sedimentary; this makes it dense and hard. A creature advanced enough, with the intelligence of human civilization, could go through the stone age with tools available in the ocean, and using such tools chisel out homes out of the rock formations at the bottom of the sea. It would not be too far off from Native American style homes.



        As far as the Inuits that you mention, the Igloo Construction would be a better shape for the water pressure of the ocean, but would probably be easier made as being chiselled-out into the stone (like the cliff dwellers), as mining rock only to re-form it would be difficult, especially because any type of mortar would be difficult (but not impossible) to make inside water.






        share|improve this answer









        $endgroup$



        Assuming the mer-people can breathe through water, and mirroring Native American style homes, then it would be practical to form homes out of sedimentary rocks at the bottom of the sea. These would likely resemble the homes of cliff dwellers or adobe-style homes.



        Most rock at the bottom of the sea is sedimentary; this makes it dense and hard. A creature advanced enough, with the intelligence of human civilization, could go through the stone age with tools available in the ocean, and using such tools chisel out homes out of the rock formations at the bottom of the sea. It would not be too far off from Native American style homes.



        As far as the Inuits that you mention, the Igloo Construction would be a better shape for the water pressure of the ocean, but would probably be easier made as being chiselled-out into the stone (like the cliff dwellers), as mining rock only to re-form it would be difficult, especially because any type of mortar would be difficult (but not impossible) to make inside water.







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered 4 hours ago









        cegfaultcegfault

        1,23749




        1,23749











        • $begingroup$
          Actually most of the bottom of the sea is mud. Sedimentary rocks form when pressure is high enough to consolidate the loose grains.
          $endgroup$
          – L.Dutch
          4 hours ago










        • $begingroup$
          That's kinda what I was thinking as well, but wouldn't that stone made by high-pressure require extreme strenght to use? I really like the idea of a city carved in, Arizona cliff-dweller style, but I wonder if it would be possible on the stone found in deep waters? Most cliff-dweller cities are carved in soft stone, if I'm not mistaken.
          $endgroup$
          – Chloé B
          3 hours ago










        • $begingroup$
          @ChloéB difficult, but possible
          $endgroup$
          – cegfault
          3 hours ago
















        • $begingroup$
          Actually most of the bottom of the sea is mud. Sedimentary rocks form when pressure is high enough to consolidate the loose grains.
          $endgroup$
          – L.Dutch
          4 hours ago










        • $begingroup$
          That's kinda what I was thinking as well, but wouldn't that stone made by high-pressure require extreme strenght to use? I really like the idea of a city carved in, Arizona cliff-dweller style, but I wonder if it would be possible on the stone found in deep waters? Most cliff-dweller cities are carved in soft stone, if I'm not mistaken.
          $endgroup$
          – Chloé B
          3 hours ago










        • $begingroup$
          @ChloéB difficult, but possible
          $endgroup$
          – cegfault
          3 hours ago















        $begingroup$
        Actually most of the bottom of the sea is mud. Sedimentary rocks form when pressure is high enough to consolidate the loose grains.
        $endgroup$
        – L.Dutch
        4 hours ago




        $begingroup$
        Actually most of the bottom of the sea is mud. Sedimentary rocks form when pressure is high enough to consolidate the loose grains.
        $endgroup$
        – L.Dutch
        4 hours ago












        $begingroup$
        That's kinda what I was thinking as well, but wouldn't that stone made by high-pressure require extreme strenght to use? I really like the idea of a city carved in, Arizona cliff-dweller style, but I wonder if it would be possible on the stone found in deep waters? Most cliff-dweller cities are carved in soft stone, if I'm not mistaken.
        $endgroup$
        – Chloé B
        3 hours ago




        $begingroup$
        That's kinda what I was thinking as well, but wouldn't that stone made by high-pressure require extreme strenght to use? I really like the idea of a city carved in, Arizona cliff-dweller style, but I wonder if it would be possible on the stone found in deep waters? Most cliff-dweller cities are carved in soft stone, if I'm not mistaken.
        $endgroup$
        – Chloé B
        3 hours ago












        $begingroup$
        @ChloéB difficult, but possible
        $endgroup$
        – cegfault
        3 hours ago




        $begingroup$
        @ChloéB difficult, but possible
        $endgroup$
        – cegfault
        3 hours ago











        1












        $begingroup$

        Cegfault took the most obvious material: stone. Let me offer a couple more.



        Coral



        Houses could be grown through coral polyp husbandry. Officially, the material is calcium carbonate. Houses of nearly any size could be made through this method, though is would be slow. However, with a bit of engineering, walls, floors, and roofs can be built this way. Thick coral would be a reasonable protection from break-in.



        Kelp and sea grass



        Agriculture isn't just for food! Cultivated sea grasses could be planted, and woven as they grow to create sturdy walls. This solution would be excellent for tipi style domiciles. Or, if weaving walls isn't your cup of tea, you could cultivate personal groves of sea grass, then trim a path into the grove and rooms within the grove (think "corn maze").



        Caves in ocean trenches



        There are oceanic trenches all over the planet. The wonderful thing about trenches, is that they provides sides. Especially the deep ones. Caves can be hewn out of the sides. Hole households could be inside, so long as the local current isn't so strong that it can erode the cave mouth. This solution would work anywhere there was a reasonably steep, somewhat verticalish surface (the sides of volcanic mountains are especially prized for their central heating).






        share|improve this answer









        $endgroup$

















          1












          $begingroup$

          Cegfault took the most obvious material: stone. Let me offer a couple more.



          Coral



          Houses could be grown through coral polyp husbandry. Officially, the material is calcium carbonate. Houses of nearly any size could be made through this method, though is would be slow. However, with a bit of engineering, walls, floors, and roofs can be built this way. Thick coral would be a reasonable protection from break-in.



          Kelp and sea grass



          Agriculture isn't just for food! Cultivated sea grasses could be planted, and woven as they grow to create sturdy walls. This solution would be excellent for tipi style domiciles. Or, if weaving walls isn't your cup of tea, you could cultivate personal groves of sea grass, then trim a path into the grove and rooms within the grove (think "corn maze").



          Caves in ocean trenches



          There are oceanic trenches all over the planet. The wonderful thing about trenches, is that they provides sides. Especially the deep ones. Caves can be hewn out of the sides. Hole households could be inside, so long as the local current isn't so strong that it can erode the cave mouth. This solution would work anywhere there was a reasonably steep, somewhat verticalish surface (the sides of volcanic mountains are especially prized for their central heating).






          share|improve this answer









          $endgroup$















            1












            1








            1





            $begingroup$

            Cegfault took the most obvious material: stone. Let me offer a couple more.



            Coral



            Houses could be grown through coral polyp husbandry. Officially, the material is calcium carbonate. Houses of nearly any size could be made through this method, though is would be slow. However, with a bit of engineering, walls, floors, and roofs can be built this way. Thick coral would be a reasonable protection from break-in.



            Kelp and sea grass



            Agriculture isn't just for food! Cultivated sea grasses could be planted, and woven as they grow to create sturdy walls. This solution would be excellent for tipi style domiciles. Or, if weaving walls isn't your cup of tea, you could cultivate personal groves of sea grass, then trim a path into the grove and rooms within the grove (think "corn maze").



            Caves in ocean trenches



            There are oceanic trenches all over the planet. The wonderful thing about trenches, is that they provides sides. Especially the deep ones. Caves can be hewn out of the sides. Hole households could be inside, so long as the local current isn't so strong that it can erode the cave mouth. This solution would work anywhere there was a reasonably steep, somewhat verticalish surface (the sides of volcanic mountains are especially prized for their central heating).






            share|improve this answer









            $endgroup$



            Cegfault took the most obvious material: stone. Let me offer a couple more.



            Coral



            Houses could be grown through coral polyp husbandry. Officially, the material is calcium carbonate. Houses of nearly any size could be made through this method, though is would be slow. However, with a bit of engineering, walls, floors, and roofs can be built this way. Thick coral would be a reasonable protection from break-in.



            Kelp and sea grass



            Agriculture isn't just for food! Cultivated sea grasses could be planted, and woven as they grow to create sturdy walls. This solution would be excellent for tipi style domiciles. Or, if weaving walls isn't your cup of tea, you could cultivate personal groves of sea grass, then trim a path into the grove and rooms within the grove (think "corn maze").



            Caves in ocean trenches



            There are oceanic trenches all over the planet. The wonderful thing about trenches, is that they provides sides. Especially the deep ones. Caves can be hewn out of the sides. Hole households could be inside, so long as the local current isn't so strong that it can erode the cave mouth. This solution would work anywhere there was a reasonably steep, somewhat verticalish surface (the sides of volcanic mountains are especially prized for their central heating).







            share|improve this answer












            share|improve this answer



            share|improve this answer










            answered 2 hours ago









            JBHJBH

            47.2k699222




            47.2k699222





















                1












                $begingroup$

                I like the Coral husbandry of JBH and carving out of cave/cliff walls. But I can add one more option.



                A civilization may advance to a point where they need to use energy sources. Best energy source maybe geothermal vents and underwater volcanoes. this could provide energy for future technological development.



                Now if your "merfolk" could harness this, they would build structures around these energy sources, maybe control the spewing lava to form the structure around it. So, you could create an igneous rock/obsidian structure.



                You could augment these structures with other building materials. Unfortunately, where you would find these energy source may not be where you would also find coral or sea grasses. Sedimentary rock, such as sandstone would be readily available, or any other strong and tough rock that would hold up to currents, external forces and quakes that would most definitely accompany a volcano.



                Maybe you can control the water chemistry enough to grow massive salt crystals to incorporate into your structures. This would be decorative in nature only and would be fairly difficult to do in this environment, but would make a great "temple" of some kind if your civilization advanced to a Aztec level society.






                share|improve this answer









                $endgroup$

















                  1












                  $begingroup$

                  I like the Coral husbandry of JBH and carving out of cave/cliff walls. But I can add one more option.



                  A civilization may advance to a point where they need to use energy sources. Best energy source maybe geothermal vents and underwater volcanoes. this could provide energy for future technological development.



                  Now if your "merfolk" could harness this, they would build structures around these energy sources, maybe control the spewing lava to form the structure around it. So, you could create an igneous rock/obsidian structure.



                  You could augment these structures with other building materials. Unfortunately, where you would find these energy source may not be where you would also find coral or sea grasses. Sedimentary rock, such as sandstone would be readily available, or any other strong and tough rock that would hold up to currents, external forces and quakes that would most definitely accompany a volcano.



                  Maybe you can control the water chemistry enough to grow massive salt crystals to incorporate into your structures. This would be decorative in nature only and would be fairly difficult to do in this environment, but would make a great "temple" of some kind if your civilization advanced to a Aztec level society.






                  share|improve this answer









                  $endgroup$















                    1












                    1








                    1





                    $begingroup$

                    I like the Coral husbandry of JBH and carving out of cave/cliff walls. But I can add one more option.



                    A civilization may advance to a point where they need to use energy sources. Best energy source maybe geothermal vents and underwater volcanoes. this could provide energy for future technological development.



                    Now if your "merfolk" could harness this, they would build structures around these energy sources, maybe control the spewing lava to form the structure around it. So, you could create an igneous rock/obsidian structure.



                    You could augment these structures with other building materials. Unfortunately, where you would find these energy source may not be where you would also find coral or sea grasses. Sedimentary rock, such as sandstone would be readily available, or any other strong and tough rock that would hold up to currents, external forces and quakes that would most definitely accompany a volcano.



                    Maybe you can control the water chemistry enough to grow massive salt crystals to incorporate into your structures. This would be decorative in nature only and would be fairly difficult to do in this environment, but would make a great "temple" of some kind if your civilization advanced to a Aztec level society.






                    share|improve this answer









                    $endgroup$



                    I like the Coral husbandry of JBH and carving out of cave/cliff walls. But I can add one more option.



                    A civilization may advance to a point where they need to use energy sources. Best energy source maybe geothermal vents and underwater volcanoes. this could provide energy for future technological development.



                    Now if your "merfolk" could harness this, they would build structures around these energy sources, maybe control the spewing lava to form the structure around it. So, you could create an igneous rock/obsidian structure.



                    You could augment these structures with other building materials. Unfortunately, where you would find these energy source may not be where you would also find coral or sea grasses. Sedimentary rock, such as sandstone would be readily available, or any other strong and tough rock that would hold up to currents, external forces and quakes that would most definitely accompany a volcano.



                    Maybe you can control the water chemistry enough to grow massive salt crystals to incorporate into your structures. This would be decorative in nature only and would be fairly difficult to do in this environment, but would make a great "temple" of some kind if your civilization advanced to a Aztec level society.







                    share|improve this answer












                    share|improve this answer



                    share|improve this answer










                    answered 2 hours ago









                    SonvarSonvar

                    5047




                    5047





















                        1












                        $begingroup$

                        Whalebone.



                        Those bones are big. They can be found on the ocean floor.



                        whale fall
                        https://en.wikipedia.org/wiki/Whale_fall



                        Ancient Siberians made huts out of mammoth bones.
                        source
                        mammoth bone hut



                        And people do make huts out of whalebone found on the beach.
                        https://www.pinterest.com/pin/223280094000002936
                        whalebone hut



                        Probably there would be a lot more whale bones available to your merpeople than can be found on land. Plus bone huts offer fun writing possibilities. Besides whalebones, there can be other comparably large or larger bones used to make the buildings...






                        share|improve this answer









                        $endgroup$

















                          1












                          $begingroup$

                          Whalebone.



                          Those bones are big. They can be found on the ocean floor.



                          whale fall
                          https://en.wikipedia.org/wiki/Whale_fall



                          Ancient Siberians made huts out of mammoth bones.
                          source
                          mammoth bone hut



                          And people do make huts out of whalebone found on the beach.
                          https://www.pinterest.com/pin/223280094000002936
                          whalebone hut



                          Probably there would be a lot more whale bones available to your merpeople than can be found on land. Plus bone huts offer fun writing possibilities. Besides whalebones, there can be other comparably large or larger bones used to make the buildings...






                          share|improve this answer









                          $endgroup$















                            1












                            1








                            1





                            $begingroup$

                            Whalebone.



                            Those bones are big. They can be found on the ocean floor.



                            whale fall
                            https://en.wikipedia.org/wiki/Whale_fall



                            Ancient Siberians made huts out of mammoth bones.
                            source
                            mammoth bone hut



                            And people do make huts out of whalebone found on the beach.
                            https://www.pinterest.com/pin/223280094000002936
                            whalebone hut



                            Probably there would be a lot more whale bones available to your merpeople than can be found on land. Plus bone huts offer fun writing possibilities. Besides whalebones, there can be other comparably large or larger bones used to make the buildings...






                            share|improve this answer









                            $endgroup$



                            Whalebone.



                            Those bones are big. They can be found on the ocean floor.



                            whale fall
                            https://en.wikipedia.org/wiki/Whale_fall



                            Ancient Siberians made huts out of mammoth bones.
                            source
                            mammoth bone hut



                            And people do make huts out of whalebone found on the beach.
                            https://www.pinterest.com/pin/223280094000002936
                            whalebone hut



                            Probably there would be a lot more whale bones available to your merpeople than can be found on land. Plus bone huts offer fun writing possibilities. Besides whalebones, there can be other comparably large or larger bones used to make the buildings...







                            share|improve this answer












                            share|improve this answer



                            share|improve this answer










                            answered 2 hours ago









                            WillkWillk

                            115k27218482




                            115k27218482




















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                                ValueError: Expected n_neighbors <= n_samples, but n_samples = 1, n_neighbors = 6 (SMOTE) The 2019 Stack Overflow Developer Survey Results Are InCan SMOTE be applied over sequence of words (sentences)?ValueError when doing validation with random forestsSMOTE and multi class oversamplingLogic behind SMOTE-NC?ValueError: Error when checking target: expected dense_1 to have shape (7,) but got array with shape (1,)SmoteBoost: Should SMOTE be ran individually for each iteration/tree in the boosting?solving multi-class imbalance classification using smote and OSSUsing SMOTE for Synthetic Data generation to improve performance on unbalanced dataproblem of entry format for a simple model in KerasSVM SMOTE fit_resample() function runs forever with no result