to get air
Dolphins can go 23 miles deep in water.
Dolphins must go to the surface, because they breathe air. Dolphins are mammals, not fish.
The dolphins sleep near the surface of the water, but they only take short naps because they do not have gills, they have lungs and need to go to the surface to breath.
Dolphins and Whales can stay under water for so long is because they have blowholes to come to the surface and get air. They can stay under water for quite a while before they need another breath at the surface:) Need more help... Just ask!!!!!!!!!!!!!!
I believe the main reason for dolphins being warm-blooded is because of the blow holes they have. This allows to go up to the surface of the water and breathe the air all others on land inhale.
Dolphins go to the surface because they need air (oxygen) to breath and fish can air (oxygen) from the water.
Dolphins can't breathe underwater because they are mammals. They go to the surface to breathe and then hold their breath while underwater
they go in the deep of the water
seals spend more time on the land, they only go in water to hunt.
Because they are mammals.
Dolphins don t breath under water. Mammals breath air. Every 15 min they go out of the water to breath
Sometimes, but like baleen whales dolphins can jump out of the water, get a big breath and go catch some food. Then they go straight back to the surface for another big breath. Because like us they have lungs!