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Do sea creatures that live in the depths of oceans need super strength to survive the pressures?
The pressures of the deeper parts of ocean are such that submersible need to be made of strongest materials like a Navy submarine, or a titanium alloy hull.
I imagine any creature living at those depths must have bodies that are just as hard as those materials, and need the same strength to move itself around.
Is it not like beings that have evolved on another planet with much higher gravity than Earth will have physical strength much greater than creatures from Earth?
This notion is repeated in fiction as well of course like with Aquaman, or Namor from Marvel Comics.
No, because for the majority of those creatures the pressures inside their bodies are the same as the pressure of the water that is surrounding them. Unlike a sub which is trying to maintain a pressure of only one atmosphere inside, these sea animals don’t have a pressure differential to maintain.
(The exceptions are deep-diving whales; they seem to cope by basically letting the external pressure collapse their chest cavity and lungs while they are down deep. We’re still trying to figure out exactly how they manage that trick.)
No, because for the majority of those creatures the pressures inside their bodies are the same as the pressure of the water that is surrounding them. Unlike a sub which is trying to maintain a pressure of only one atmosphere inside, these sea animals don’t have a pressure differential to maintain.
(The exceptions are deep-diving whales; they seem to cope by basically letting the external pressure collapse their chest cavity and lungs while they are down deep. We’re still trying to figure out exactly how they manage that trick.)
Wow really, that is all it takes then to survive those pressures is to equalize huh? Well, then I guess the same can be said for creatures from a planet with higher gravity too then.
Wow really, that is all it takes then to survive those pressures is to equalize huh? Well, then I guess the same can be said for creatures from a planet with higher gravity too then.
Any organism that evolved on a higher-gravity planet would have evolved a body plan that would be adequate to cope with it, yes.
Some of those very deep-water sea creatures can't be brought to the surface alive for study, because the extreme drop in pressure kills them. They quite literally explode!
Do sea creatures that live in the depths of oceans need super strength to survive the pressures?
No, they've acclimated.
Quote:
The pressures of the deeper parts of ocean are such that submersible need to be made of strongest materials like a Navy submarine, or a titanium alloy hull.
I imagine any creature living at those depths must have bodies that are just as hard as those materials, and need the same strength to move itself around.
Is it not like beings that have evolved on another planet with much higher gravity than Earth will have physical strength much greater than creatures from Earth?
This notion is repeated in fiction as well of course like with Aquaman, or Namor from Marvel Comics.
Any organism that evolved on a higher-gravity planet would have evolved a body plan that would be adequate to cope with it, yes.
Some of those very deep-water sea creatures can't be brought to the surface alive for study, because the extreme drop in pressure kills them. They quite literally explode!
Is that the reason as to why the giant and colossal squids are rarely ever seen?
The pressure at 1000 feet is about 30 atmospheres.
Submarines deal with it by maintaining a "shirt sleeve" atmosphere inside the ship and a super strong hull to keep it that way. They do not equalize as they rise, since the inside is always at one atmosphere, or sea level.
There are many sea animals that can never visit the surface, just as there are many who cannot visit the depths.
When a submarine hull fails at 1000 feet the atmosphere within is compressed so rapidly and so completely that it ignites, sort of like a gigantic diesel engine. Diesels have a compression ratio of about 16 to 1, so you can imagine what a 29 to 1 would do to a human. That's why remains are never found unless the accident happens in shallow waters.
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