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Questions tagged [ocean]

For questions about bodies of salt water large enough to sustain their own internal currents and do not drain to any larger body of water. Covers both currents, navigation, and ecology.

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3answers
971 views

Could Earth still survive if we lost almost 90% of all surface water?

I have been toying with the idea that all oceans are gone. Underground water still exists but the Earth has essentially turned into the planet from Dune. My characters all live / survive out where ...
0
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1answer
53 views

Floating Ocean Vegetation

I have several types of free-floating vegetation to pick from: Trees Reeds/grasses Lily Pad like-plants Which type would best survive in the open ocean supporting small pockets of creatures, since ...
14
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3answers
2k views

Plastic and oil eating microbes apocalypse part 1 - How fast can they spread?

Plastic is a huge problem in our lives. One of the ideas is to engineer plastic eating bacteria or fungi. Experiments already begun, and accidents already happen: a team of international scientists ...
9
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1answer
356 views

Can someone help me with ocean currents? I'm really confused

I've been working on a constructed world which started out as the home of an alien race from a sci-fi story I'm writing but just became a pure world building project. As you can see from the map it ...
1
vote
1answer
159 views

What would a sea made of Iodine look like? [closed]

If it was possible, what would a sea made of liquid state Iodine look like? How would it smell? From my research, I've seen people saying its liquid state is somewhat "invisible" since it generates a ...
2
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2answers
109 views

Equatorial or Meridial Ocean

I am building a world that is mostly land but i need something to divide it all up a bit so i decided I'm adding an ocean. What i want to know is the following: Would it be even remotely possible ...
5
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4answers
202 views

If an alien had evolved on a planet with 10 times Earth's gravity, how far into Earth's Ocean could they dive?

Let's assume that this hypothetical alien crawled out of the identical primordial ooze to the point where they share significant genetic similarity with humans, and due to either evolution or outside ...
8
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5answers
1k views

Some science or graspable logic behind a whole new world below the ocean on earth

So not trying to wander into flat earth theory here, But a hidden fantasy world (of elves) in the present day. How would we explain it. There is no contact whatsoever between the two world. Could ...
4
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2answers
180 views

What Sea Creatures Would Make Good Undersea Cavalry?

In my book series, there is an underwater civilization called the Lobster Empire (basically underwater Rome inhabited by Crab and Lobster people). Stuff to know about the Lobster Empire: Roman-esque ...
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2answers
96 views

How would a colossal explosion affect an ocean-based planet?

In my book series, a space station called the T-Ray that is capable of causing explosions the size of the Chixculub impact explosion just fired at a planet that is completely covered by a massive ...
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3answers
1k views

How Would A Group of Undersea Explorers Survive if Their Food Supply Ran Out?

In my book series, a group of a few hundred explorers are sent from a planet called Ishgabangaloodoo to explore Sea World. Some things to know about Ishgabangaloodoo: Its citizens are referred to as ...
8
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2answers
126 views

How would you go about seeding oceans of Europa with adapted Earth life?

How do you go about building a working Earth-like ocean ecosystem from scratch in Europa's subsurface ocean? On Earth, abyssopelagic species have evolved to live more than 6km below the surface. ...
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0answers
41 views

How would an extra moon affect the tides? [duplicate]

In my world, I'm planning to add a second moon which would be positioned closely to the first. I was wondering what effect would that have on the tides?
9
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4answers
2k views

In a single-continent world, what could cause hydrothermal vents?

In the world I'm building, there is a single continent. However, in the deeper parts of the ocean, there are hydrothermal vents. They're pretty necessary to my story, but I can't figure out why they ...
23
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12answers
8k views

Is it possible to bind multiple ships together on open water?

In Renaissance period, would it be possible to safely bind ships together for extended periods of time? Imagine if there was a fleet of large ships (say, two dozen) that have been traveling over a ...
5
votes
3answers
172 views

What would happen to the climate if Earth's sea-levels rose 2000m?

This is the first of possibly several posts about the following scenario, in which Earth's sea-level rises 2 km overnight, generating a world map looking like this: Question: What would be the ...
7
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4answers
1k views

How to have high tides in the tropics?

The Bay of Fundy sees the world's highest tides, with ocean water advancing and withdrawing as much as 20 meters or more within a single day. Here is a list of the 50 tidal stations around the world ...
59
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8answers
12k views

Could a submarine built during the cold war maintain pressure underwater for 50 years?

I'm working on an idea for a novel and need to know roughly if this is possible. Ideally, the characters would be able to attach another submersible (usually used for rescue) onto the sub in the ...
20
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7answers
4k views

What would it take for an island to sink and rise yearly and naturally

So I'm writing a book and need help to better explain this island that sinks, more on that in a moment as I give you the basic build of the planet... First, its a world on a very tilted angle. the ...
18
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9answers
5k views

Why build underwater outposts, rather than ocean-surface settlements?

Suppose we've colonized a planet with 99% of the surface area covered by oceans. It has submerged continental crusts, averaging 200-500m underwater, with the average depth of open ocean being 1000-...
1
vote
2answers
184 views

How long would it take oceans to evaporate if they stopped gaining water?

How long would it take for the oceans to evaporate if the following were true? They suddenly stopped gaining water through rain/rivers/etc., and External patterns (e.g. atmospheric humidity) were ...
2
votes
2answers
179 views

Marine Animals best suited for domestication?

What marine or brackish water animals would be best for domestication attempts by a semi-aquatic civilization? Bonus Points for those that get me pet/domesticated sharks!
7
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3answers
465 views

What is the maximum height for coral?

I have a type of coral that feeds off of bacteria that love bird feces (or something involving a bird species). It grows large rocky spires out of the water to create a habitat for birds. I need to ...
10
votes
6answers
323 views

Do moons determine the speeds at which tides move? Is there a limit to this speed?

I'm writing a short story that takes place on an imaginary planet that is 88% ocean. The planet has two moons and one continent that is regularly flooded under 500 to 1500 feet of water. The tides are ...
23
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12answers
10k views

Could a person scuba diving take off his air tank and use it to propel himself?

So, in my story, in a prelude to an epic aquatic fight scene, my main character gets chased by a great white shark. He swims as fast as he can but he can’t escape. Just to clarify, he’s wearing one of ...
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7answers
3k views

How do I maximize a planet's wave height (on average)?

Premise I am in the formation phase of a fictional world. I would like one of its notable characteristics to be extremely large waves. On Earth, most of our large waves are triggered by earthquakes, ...
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3answers
94 views

How to save a person who has just fell down form an oceanic city? [closed]

So, my main characters, Bryan, Julia, and Logan have been visiting the city of Hydropolis, on the ocean planet of Aquatus V. The city overlooks the most beautiful sight under the sea, a 5,000 foot ...
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4answers
3k views

Could you actually make Sandy's Treedome in real life?

So, I have a question that focuses on a character from a show, Spongebob. Sandy Cheeks lives in a reverse aquarium under the sea in Bikini Bottom, in a dome that looks like this The Treedome is made ...
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3answers
3k views

Boats for really tall people

So I'm writing a book that takes place in an endless ocean with islands inhabited by many races, and I'm trying to come up with unique boat ideas for races; well I have most of them, but I would like ...
15
votes
7answers
2k views

Is it possible to detect or recognize mammals, fishes or any other sea creatures that swims in an ocean from a flying aircraft?

I am working on a story and I would like to know if it's possible to detect or recognize mammals, fishes or any other sea creatures that swims in an ocean from an aircraft with our current technology ...
3
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2answers
210 views

is it possible to detect submarines in a sea from an aircraft? if possible how will it be?

While working on my story, I just came up with this doubt. Is it possible to know or to detect something like a submarine in an ocean from an aircraft with our current technology? I mean to detect it ...
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0answers
76 views

Life on oceans above the sky [closed]

The Leidenfrost effect is a physical phenomenon in which a liquid, in near contact with a mass significantly hotter than the liquid's boiling point, produces an insulating vapor layer keeping that ...
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2answers
111 views

What would be the best underwater environment to set up their civilization?

So, on the planet Oceanus, their exist a species, called the Crustaceanoids, who live in an aquatic environment. They are crustaceans, no duh, and are crab like animals. They are exceptionally ...
4
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4answers
129 views

Genetically altering soldiers to be capable of doing missions in an aquatic environment?

So, in the mid 25th century, humanity has become a space faring race, with about 10,000 planets under control of Earth. There are many different ecosystems on different planets, from normal ones, like ...
4
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9answers
293 views

How to sink a small island under the sea with 1960s tech?

So, on the planet of Qualia, a tiny island of the coast of Da’Tora called Saluk has disobeyed Tora VII the Slaughterers rule, which is never a good idea, as you can guess from the name. He stationed ...
8
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2answers
217 views

Is there anything wrong with my plate tectonics map?

Here is a map I just produced of the plate tectonics of a world I'm working on. Does anyone familiar with the subject see anything wrong with it? If you can differentiate between the penciled and the ...
3
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5answers
2k views

I need a way to transfer two men from a submarine to a sunken rocket [closed]

I need a way to get two men from the inside of a submarine to the inside of a sunken rocket 3000 feet under the water without killing the men flooding the rocket flooding the submarine Does anybody ...
0
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1answer
218 views

What could be the energy source of a sentient, supermassive biological entity on an ocean planet?

In exploring the xenobiology and design for an entity (Entity X) in my fictional universe, I wanted to raise the viability of an organism that is so massive, it is visible from the planet's upper ...
6
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2answers
206 views

How to keep this artificial water planet from evaporating or freezing?

Piggybacking on this question: Could soft matter infused with nano or pico sized magnets be used to clump together so that we could create environments with it? ...So we have a planet that has lower ...
20
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5answers
3k views

How deep can I make my underwater facility?

In my world I want to create a really deep underwater science facility to conduct weird and unethical experiments in. But I think to myself: How deep could I take such a building? Does it become ...
0
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0answers
71 views

Why would a world have a floating ocean [duplicate]

I'm imagining an expansive body of water that is suspended high above the ground. One that can sustain diverse ecosystems that take advantage of the water to air conditions. What natural or other ...
6
votes
1answer
227 views

Size and Effect of Ocean Tides on My World

I'm building a world that orbits close in to an M-Dwarf sun. I've figured out a bunch of the physical parameters of the world, I just can't quite get a solid handle on my tides. I know my tides will ...
10
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5answers
311 views

Would Floating Islands Dampen Waves on a Water World?

This is a water world with depths ranging from 2-3 kilometers deep up to vast shallows of only a few meters deep usually around volcanic islands, where there are coral islands not bigger than Hawaii's ...
33
votes
8answers
8k views

If there are water oceans, must there be oxygen in the atmosphere?

I am trying to create a planet that either has no oxygen in the air, or it has very little; i.e. not enough to sustain humans without the use of a breathing apparatus. Large portions of the planet (...
8
votes
2answers
768 views

Life in extremely low gravity water

Let's assume the planet has only one half the mass of the moon and is covered by shallow ocean. To eliminate water pressure at extreme depths, assume the ocean is also quite shallow, with a maximum ...
26
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5answers
5k views

How reflective is blood?

If you were on a raft in say, an ocean of blood, and it was very still, would you be able to see the stars of the night sky reflected in it? Would you be able to see your own reflection? How far down ...
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4answers
407 views

If all the water on earth were to be displaced into the atmosphere creating a water canopy, how thick would it be?

If the water on earth were displaced to surround the earth in the atmosphere to create a water canopy, how thick would that canopy be? I apologize I should have been more specific in my original ...
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4answers
167 views

In a world 2x the size of earth would sentient aquatic life be more probable?

The idea is in a world with 2x the gravity (which follows from 2x the size), gravity would have less an impact in the oceans. Does that follow?
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7answers
5k views

What could cause the world to be almost completely submerged in water, naturally or man-made?

I'm trying to build a world that is almost completely water, but I couldn't come up with an explanation for WHY the world was like this. The world has the same gravity and atmosphere of Earth. It also ...
4
votes
4answers
249 views

Could a giant floating self-supporting city survive a thousand year voyage?

One of the main plots in my world is that a huge ship arrives in a strange group of isles. This ship a gigantic city that completely self-supports itself with farms, houses, gardens, parks, and even ...