Evolutionary theory is that dolphins were a land animal which returned to the sea some millions of years ago. They can breathe on the surface because they have a blowhole which allows them to breathe air. They cannot survive for long out of water because their physiology requires that they be suspended in water and because their skin dries out quickly.
Dolphins are mammals, like ourselves, only they do not have legs. Since they are mammals, they can not breathe underwater, so they have a blowhole on top of their heads, near their neck. Dolphins are able to hold their breath for such a long time, it seems as if the live underwater. This goes for any type of whales or porpoises.
Blue whales are massive and have adapted to live in the water. Water provides extra support for them, as their bodies are not designed to hold that much weight on land.
Well they would actually prefer land to water, its just they have a hard time walking around up here
Dolphins live in shallow waters because they are hungry and most eat the fish there
They live in the sea near to the shore
so they can live
Dolphins are mammals which means they give live birth, under water!
Dolphins communicate under water by using echolocation
Dolphins live beneath the sea in the water. There is nothing called 'weather' under the ocean's surface.
Whales and dolphins can't communicate under water
It is beacouse of their blowholes
by using their great body strength and lung capacity
Dolphins can live in both, it depends on their inhabitant.
NO, they play with other dolphins.
No, they live in the water.
Seriously?? Dolphins live in salt water or in the Amazon.
dolphins are highly intelligent,,, dolphins live mostly in the ocean in the shallow water,, they can live in any ocean around the would. but some dolphins live in rivers
Dolphins live in the sea water, but do not drink it. The ocean water is too salty for the dolphins system to handle.