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Sea animals breathe through their gills,which are found under the gill cover.Water enters the animals's mouth and dissolved oxygen will flow all the way into the animal's blood stream while water that does not contain any oxygen will be flowing out of the gills.

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How do fish breathe underwater?

Fish breathe underwater using their gills. As water passes over their gills, oxygen is absorbed from the water and carbon dioxide is released. This process allows fish to extract oxygen from the water and breathe efficiently.


Do you need to have gills to breathe underwater?

Yes, you do need gills to breathe underwater. Gills process the water through them that makes the water allowed to go through the animal's body without drowning them. Gills are the only thing that keep the animals that live underwater, alive. they also don't make you breath the air in-you breath the oxygen in the water!


Can a manatee breathe underwater?

No, manatees are mammals and need to surface to breathe air. They can hold their breath for up to 20 minutes while resting, but they must surface regularly to breathe.


Can white sharks only breathe underwater?

Yes, white sharks have gills that allow them to extract oxygen from water, which is how they breathe underwater. They need to constantly swim to ensure a flow of water over their gills for oxygen exchange.


Can turtles breath underwater?

A turtle needs air to breathe. Some turtles can slow their metabolism, allowing them to sleep underwater, but it must come up to the surface of the water in order to breathe. It can hold it's breath and stay underwater awhile, but it must surface to breathe or it will drown. Turtles cannot breathe underwater because they do not have gills, like fish - they have lungs, much like human lungs. Some aquatic turtles such as the red-eared slider can hold their breath for 3-4 hours, which might make you think that they are breathing underwater, but they really are not.

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