74 How would an aquatic race develop computers? 2014-11-06T16:04:45.930

49 Could underwater living organism create technology? 2014-10-11T14:56:20.973

48 Is there a maximum size an ocean bound creature could grow to? 2014-09-19T08:09:54.467

45 Is it harder for an intelligent octopus to live on land, or a human to live in space? 2019-01-15T22:14:18.237

43 How expressive is a color-based language? 2016-12-29T16:43:44.533

37 In an underwater society, would the wheel ever be invented? 2017-09-07T11:06:40.210

34 An underwater creature that could take down a boat 2015-11-30T15:29:09.700

30 Are there any structural materials suitable for production underwater? 2018-04-18T09:47:13.520

27 What types of musical instruments would develop underwater? 2015-07-12T15:31:48.243

27 How deep can the ocean plausibly be? 2015-11-26T12:48:09.477

27 How would an underwater race protect against pressure waves? 2019-10-27T22:01:35.210

26 How could a simple submarine be built using 100 BC technology? 2015-06-18T16:40:56.767

26 Any reasons for a primal aquatic race to build land-based villages? 2016-02-09T16:33:44.310

25 What would happen to a human body subjected to extreme water pressure? 2018-12-17T17:42:03.937

24 How would nuclear fallout affect the oceans? 2017-08-22T18:59:27.787

24 Could a person scuba diving take off his air tank and use it to propel himself? 2018-06-19T18:43:42.223

23 Weapons for Mer-people 2015-05-20T17:51:45.310

22 Sea creature moving via rotational motions 2015-04-27T17:19:55.940

22 What is plausible biology of ocean-dwelling, tool-using, intelligent creatures? 2016-12-28T15:59:25.427

21 How do underwater societies develop mining? 2016-06-20T12:04:30.040

21 What are the considerations for waterproofing a building's first few floors? 2016-12-21T19:54:57.690

21 What is a medieval technology method of underwater enemy detection? 2017-07-18T20:16:30.673

21 Looking for a soft substance that doesn't dissolve underwater 2019-05-23T21:36:00.303

20 How do mermaids perform major surgical procedure underwater? 2015-12-02T02:56:10.357

19 How would an aquatic civilisation forge tools? 2014-11-06T13:31:58.657

19 What kind of weapons would still be effective under water? 2016-12-04T15:19:17.150

18 Could an aquatic civilization discover space travel? 2014-11-08T09:26:07.893

17 Do mermaids lay eggs underwater or give birth to live young? 2015-11-30T04:58:19.797

17 What underwater creature would be well-suited as a pack animal? 2018-02-22T21:16:16.170

16 What would make good clothing for an underwater species? 2015-12-03T22:13:52.030

16 Could you actually make Sandy's Treedome in real life? 2018-06-17T17:55:35.970

15 Creating a realistic world map - Underwater geography 2015-08-21T17:31:45.427

15 Oxygen cylinders in medieval world 2015-09-11T09:15:20.727

14 What would have to happen in order to force us to live in the ocean? 2014-10-17T23:16:11.683

14 How would an intelligent civilization evolve in the floor of a deep ocean world? 2014-12-08T09:11:34.213

14 What would be the mythology of an aquatic species? 2015-07-14T07:52:39.053

14 What would out-of-water warfare look like for underwater people? 2015-09-14T20:11:31.420

14 Is an "Underwater Metropolis" possible today? 2016-05-26T01:55:56.450

13 Mermaid architecture 2015-12-02T07:50:22.287

13 Trade between humans and underwater fish people 2016-12-06T23:07:36.850

12 What would be the communication range of an underwater species? 2014-10-14T12:39:56.943

12 What are the design considerations for my underwater settlement? 2015-04-18T13:28:18.297

12 Would an average seawater mermaid be any larger than its freshwater counterparts? 2015-12-01T07:36:57.600

12 Underwater Sneak Attack 2016-06-20T15:14:19.170

12 How could a climate-protection organization breed sapient, tool-developing cooperating Cephalopoda? 2017-05-25T16:03:02.637

12 How might a highly intelligent aquatic species (mermaids) communicate underwater? 2019-03-17T21:02:26.317

11 How could an underwater civilization develop electricity? 2015-12-05T14:37:08.917

11 How could there be underwater thriving city in the medieval age? 2016-04-08T04:36:55.403

11 Urban centers for octopuses 2016-08-11T20:21:51.767

11 Underwater acoustic muffling/dampening and sonar evasion. Is a stealth torpedo possible? 2017-06-12T22:36:34.833

11 Would the collapse of civilization make turning into a vampire and colonizing the ocean floor a sane idea? 2018-06-15T03:03:14.017

11 Fishing from underwater domes 2019-08-31T16:39:59.883

10 How big can the leviathan and kraken really be? 2015-11-25T18:04:41.793

10 Engaging your warp drive while underwater 2017-07-07T03:04:20.793

10 What would merfolk economies look like? 2017-08-07T10:38:16.320

10 In a single-continent world, what could cause hydrothermal vents? 2018-09-24T21:25:45.067

9 How realistic are four legged aquatic animals? 2014-10-16T11:50:07.707

9 Urban Aquatic Sanitation 2015-02-08T02:13:46.243

9 How would merfolk store and preserve their food? 2016-11-16T18:27:10.737

9 How to manage water in a city 2500 feet below sea level? 2017-08-19T05:49:34.677

9 How can merfolks stream video in a way much similar to our WiFi but underwater? 2019-02-20T03:03:46.020

9 How to blow up water and fly through the wake 2019-04-04T13:31:28.733

9 Underwater city sanitation 2019-05-21T13:36:55.827

9 What reason would a hidden, deep ocean society have to come up to the surface of a post-apocalyptic Earth and claim the land for themselves? 2019-09-20T14:44:54.753

8 How should I create my Merfolks to make them landbased? 2014-11-17T05:58:48.990

8 Is it possible to engineer a sperm whale into a submarine killer? 2015-08-07T07:36:36.440

8 How to explain a mermaid's tail morphing into legs and vice versa? 2015-12-01T09:37:23.307

8 How could an underwater civilization develop fire? 2015-12-09T21:22:38.550

8 How wide would my cylinder be to allow air 500m below water surface? 2016-11-06T04:09:14.687

8 How would an aquatic, air-breathing species organise its spaceship interior? 2018-03-19T19:34:34.243

8 Could mermaids feasibly make clothing out of natural rubber? 2018-07-23T02:52:40.117

8 What environmental factors would cause bipedalism underwater? 2020-02-13T05:26:47.163

7 How soon will the first underwater cities be built? 2014-11-27T00:52:32.087

7 High tech underwater weapon 2018-09-26T20:50:31.500

7 Plausible futuristic infrastructure for an underwater micronation built 300-500 feet below the surface 2019-01-04T19:37:34.403

7 Bronze Age Underwater Civilization 2019-07-12T04:33:35.323

6 Can we actually "blow up" the sea? 2015-01-20T13:34:03.213

6 A Completely Different Kind of Reef 2015-06-24T19:40:56.157

6 What changes would be needed for humans to live in an ocean? 2015-07-29T14:43:32.517

6 Low-tech Underwater Weaponry 2015-11-27T10:13:26.547

6 How do mermaids map ocean currents? 2015-12-02T05:42:46.753

6 What is the highest pressure humans can live in in comfort? 2016-12-23T16:58:12.183

6 What alternatives for fire can an aquatic sentient species use? 2017-02-19T17:13:28.070

6 Can underwater Atlanteans make explosives without coming onto dry land? 2017-06-01T01:07:18.840

6 Could modern sharks adapt to live in deep water? 2018-02-16T01:30:44.950

6 Deep Sea Habitat on a Low Gravity Planet 2018-03-26T20:17:51.780

6 What would the "tanks" of an underwater race look like? 2018-03-31T01:58:05.060

6 Submarine propulsion using evaporation 2019-04-05T09:47:58.783

6 How to safely construct deep underground harbors on a Snowball Earth? 2019-10-03T01:37:27.883

6 Fast way of Avoiding the Bends 2019-12-20T10:49:31.560

6 A drinks party underwater? 2020-02-28T19:09:03.093

5 How do mermaids' ears work? 2015-12-01T09:30:58.670

5 Save London From a Sudden Glacial Melting? 2015-12-02T17:29:37.183

5 What adaptations would an aquatic humanoid species need to develop sonar? 2016-05-09T01:46:01.360

5 Calculating the Resistance of Water, for Purposes of Violence 2017-09-09T14:26:47.437

5 Where on Earth is best to build a large underwater lab complex? 2017-12-26T17:35:41.037

5 Weapon that can destroy an underwater city? 2018-04-04T21:37:10.623

5 The practicality and feasibility of a fully-submersible aircraft carrier 2018-08-26T11:23:17.107

5 How large does a human’s plastron need to be? 2018-08-28T15:41:13.217