62 A 40km diameter alien saucer is floating 2km above the ocean for a long time. What are the effects on the sea ecosytem below? 2017-12-12T15:49:36.827

59 Could a submarine built during the cold war maintain pressure underwater for 50 years? 2018-08-27T19:33:10.990

40 What if a portal is opened from the Mariana trench to the Sahara desert? 2017-05-02T14:10:03.093

33 If there are water oceans, must there be oxygen in the atmosphere? 2018-02-27T04:31:46.753

26 Is it possible for an ocean to have a river flowing from it into a lake? 2017-02-02T02:24:00.103

26 How reflective is blood? 2018-02-16T04:20:08.460

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

24 Is it possible to bind multiple ships together on open water? 2018-09-24T13:18:04.217

24 Could human civilization live 150 years in a nuclear-powered aircraft carrier colony without resorting to mass killing/ cannibalism? 2019-06-24T15:00:49.400

24 How To Make Earth's Oceans as Brackish as Lyr's 2019-09-13T00:30:56.470

21 A World with Freshwater Oceans? 2017-07-07T16:49:18.343

21 How deep can I make my underwater facility? 2018-03-05T01:12:55.323

21 How do I maximize a planet's wave height (on average)? 2018-06-19T16:14:05.080

20 Why build underwater outposts, rather than ocean-surface settlements? 2018-08-12T17:25:49.990

20 What would it take for an island to sink and rise yearly and naturally 2018-08-20T23:50:24.533

19 Could a jellyfish be bio-engineered to convert salt water into fresh water? 2017-11-07T19:07:45.150

19 How to keep a ship's crew healthy in a fantasy renaissance setting? 2017-12-04T01:21:59.940

17 Is It Possible to Have Different Sea Levels, Eventually Causing New Landforms to Appear? 2019-09-18T17:46:37.980

16 What could cause the world to be almost completely submerged in water, naturally or man-made? 2018-01-16T16:20:04.260

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

15 Is it possible to detect or recognize mammals, fishes or any other sea creatures that swims in an ocean from a flying aircraft? 2018-06-12T11:09:15.487

15 Plastic and oil eating microbes apocalypse part 1 - How fast can they spread? 2018-12-10T11:01:31.667

14 Towers in the ocean; How deep can they be built? 2019-03-31T02:49:53.287

13 Would it be possible for a city floating on water to exist? 2015-04-07T14:08:00.573

11 Would Floating Islands Dampen Waves on a Water World? 2018-02-28T05:21:30.503

11 Under what circumstances would a nuclear war render Earth's oceans uninhabitable? 2018-07-31T01:47:00.307

11 Defining a superfluid ocean 2019-07-22T23:05:40.250

10 Water On A World That Is Flat? 2016-12-21T03:06:05.207

10 Boats for really tall people 2018-06-14T11:00:49.463

10 Do moons determine the speeds at which tides move? Is there a limit to this speed? 2018-06-26T03:20:51.913

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

10 Could Earth still survive if we lost almost 90% of all surface water? 2019-01-21T03:52:48.083

10 How vulnerable are the undersea internet cables to deliberate sabotage by one of the major powers (US, UK, Russia, etc)? 2019-02-13T14:39:06.717

9 Is a river running into sea while still being in a canyon possible? 2017-09-21T17:59:29.733

9 Could a deep ocean creature use some kind of bacteria in its body as a way to generate oxygen? 2017-10-27T16:55:20.927

9 Can someone help me with ocean currents? I'm really confused 2018-12-07T11:20:45.987

9 Realistic Alternatives to Dust: What Else Could Feed a Plankton Bloom? 2019-04-09T20:24:47.813

8 Exploring deep ocean at 1GPa with minimum metal available 2016-11-22T23:30:49.897

8 Can a planet have oceans of ethanol? 2017-02-21T08:04:51.437

8 Life in extremely low gravity water 2018-02-25T06:57:38.477

8 Is there anything wrong with my plate tectonics map? 2018-05-06T00:02:01.153

8 What is the maximum height for coral? 2018-07-04T14:22:30.140

8 How to have high tides in the tropics? 2018-09-06T11:50:46.477

8 How would you go about seeding oceans of Europa with adapted Earth life? 2018-10-15T19:59:57.440

8 Some science or graspable logic behind a whole new world below the ocean on earth 2018-11-01T13:35:10.300

8 Water planet turns into desert world without being rendered uninhabitable 2019-02-19T19:29:36.630

8 Can you critique my sea temp map and answer a couple of specific questions? 2019-03-13T22:38:15.950

7 Maximum Ship Size with Seasickness? 2017-12-03T02:44:27.393

7 What are the conditions of an Earth-like, water-ball planet? 2017-12-18T13:34:32.560

7 How Would A Group of Undersea Explorers Survive if Their Food Supply Ran Out? 2018-10-19T12:53:26.603

7 The Worldkillers - Method I: Oceans 2019-02-15T12:54:33.410

7 How would ocean currents work with a gulf that's closed to the equator on both sides? 2019-03-23T02:48:51.987

7 What benefits would be gained by using human laborers instead of drones in deep sea mining? 2019-03-29T04:04:58.150

7 What could cause the sea level to massively decrease? 2019-07-07T04:21:41.507

6 How long would would it take algae to spread through the sea 2016-09-30T04:03:36.117

6 Sea Travel Variables 2017-01-13T05:08:27.557

6 Breathability of Atmosphere on Ocean Planet 2017-03-30T00:40:50.743

6 Could Human Civilization Survive Hypercanes? 2017-04-01T07:07:39.407

6 How can two planets merge into another, bigger planet? 2017-10-28T13:35:51.653

6 Boiling sea between volcanoes 2018-02-02T19:59:35.423

6 Size and Effect of Ocean Tides on My World 2018-03-04T17:53:59.707

6 How to keep this artificial water planet from evaporating or freezing? 2018-03-05T18:59:39.457

6 What would happen to the climate if Earth's sea-levels rose 2000m? 2018-09-09T17:50:57.920

6 How can I get different colours of ocean? 2019-02-23T18:57:04.303

6 Would storms on an ocean world harm the marine life? 2019-03-18T18:07:58.737

6 Ocean currents near the poles 2019-06-03T13:36:34.517

6 If Earth's Oceans Were as Deep as Europa's 2019-06-15T23:10:26.863

5 Public Order/Control in a perpetually Sea-faring people: Preventing Revolt/Take Over 2017-01-03T10:38:05.330

5 How Does Island Development Limit Population Growth? 2017-04-04T22:26:25.230

5 How would it feel to sail a Rocheworld ocean? 2017-10-15T01:25:57.217

5 If an alien had evolved on a planet with 10 times Earth's gravity, how far into Earth's Ocean could they dive? 2018-11-10T20:01:15.987

5 How to identify sapient jellyfish? 2019-03-02T14:05:14.657

5 Ocean currents on a world with 1 continent and many archipelagos 2019-03-03T10:08:20.430

5 Would there still be land if the amount of water in the oceans was doubled? 2019-03-06T10:35:36.583

5 What would Define Ecosystems in a "Frozen Moon with Ocean" World 2019-03-08T18:13:57.187

5 How to share a mine of irresistable resources in the middle of an ocean without conflict? 2019-03-12T10:05:09.430

5 What would happen if the boiling point of a section of ocean was lowered to 5C? 2019-03-20T20:51:19.697

5 Relationship between Ocean Gases and Atmospheric Gases 2019-07-26T02:26:36.833

5 Can Humanity Expand to the Oceans? 2019-09-17T18:51:23.913

5 What would happen if ocean currents suddenly stopped (or changed)? 2019-11-24T17:18:08.467

4 Would a massive ocean yield larger storms? 2017-03-09T23:36:51.063

4 Tides on a Water World 2017-11-26T06:05:33.277

4 How to sink a small island under the sea with 1960s tech? 2018-05-28T03:48:35.700

4 Genetically altering soldiers to be capable of doing missions in an aquatic environment? 2018-06-02T20:59:41.703

4 What Sea Creatures Would Make Good Undersea Cavalry? 2018-10-23T15:27:26.147

4 Planet with Gridlike Seas 2019-06-23T04:04:26.537

3 Technological Progress of an Ocean Civilization 2017-04-04T21:15:31.900

3 Is it possible for the ocean to be deprived of oxygen within 1 year? 2017-09-22T02:59:41.733

3 Could a giant floating self-supporting city survive a thousand year voyage? 2018-01-10T20:23:05.557

3 I need a way to transfer two men from a submarine to a sunken rocket 2018-04-12T21:45:31.990

3 is it possible to detect submarines in a sea from an aircraft? if possible how will it be? 2018-06-09T10:58:31.637

3 What would be the implications of an ocean made from blood on the world? 2019-03-06T18:21:55.920

3 Would a monster size aquatic lizard be possible? 2019-03-30T05:17:44.207

3 How much land disappearing would it take to drop the sea level by 10 meters (30ft)? 2019-04-26T18:02:15.693

3 What plant life and resources could humans consume if colonies were established on the ocean floor? 2019-06-16T04:27:50.177

2 Could a moon with twice the tidal pull change oceanic currents? 2017-02-05T14:11:45.123

2 What would happen to Earth if it were eclipsed for nearly 10 days? 2017-11-18T19:49:30.360

2 Marine Animals best suited for domestication? 2018-07-06T22:57:01.040

2 Equatorial or Meridial Ocean 2018-11-14T20:52:12.453