Eli5 do ocean animals like fish or sea turtles need to drink water? If so how do they do it?

Question

Eli5 do ocean animals like fish or sea turtles need to drink water? If so how do they do it?

In: 2733

Answer 1

It depends on an animal. Fish gulps in water and can easily handle it. Turtles developed glands to secrete extra salt. I’ve read that some sea snakes cannot drink sea water – during rain they come to the surface and drink rain water. Many animals acquire all of their water from their food.