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They have ways of keeping their internal pressure the same as the water around them. Many of the deep-sea fish do not have any excess body cavities like swim bladders, they have reduced skeletal structure, and are usually soft and flabby.

Deep sea organisms have proteins with special confirmations that are not de-polymerized under high pressure. They are also thought to have special osmolytes help to keep cell volume constant.

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13y ago
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12y ago

A similar question would be, "how can humans survive the intense vacuum of gases on land."

Creatures evolved within the material composition and conditions of their environment. At the bottom of the ocean, gases are easily dissolved by substrate liquids like how we put carbonation in soda, so they breathe liquid the same way we breathe air. Gases aside, they are composed of the same solids and liquids as the rest of us, albeit differently adapted.

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15y ago

bacteria with many unknown and highly sophisticated type which suvive deep beneath the ocean may help the other organism in some way to survive. fish breathe in the small amount of oxygen that is in the ocean throught its gills

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6y ago

fish can survive
Well First of all, they have gills which help them breathe under water. It is much like our respiratory system, but is much smaller and has different parts. It also eats food like smaller fish or some kind of plant. Organisms eat these fish which makes them die. So to sum it up it's mainly because of it's respiratory system and digestive system.

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13y ago

No. There is a vast difference in pressure between the bottom and top of the ocean and the creatures living in those respective areas are biologically designed to exist under those conditions.

The creatures at the bottom of the ocean could survive no better at the surface than humans would survive in the pressure of the bottom.

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14y ago

no, they can not. Because if a catfish that lived at the bottom of the ocean came up the pressure on its body would be greatly different and it would end up dyig a painful death. And it works the other way around also.

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14y ago

Fish have gills, which allow them to extract oxygen from the water as land animals do from the air.

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13y ago

They use gills to breathe underwater

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10y ago

They feed on each other

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11y ago

no it is not

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Q: How do animals survive along the deeper parts of the seafloor?
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