They don't. Dolphins and whales breathe air just like we do. They can hold their breath for a long time, but they come up to the surface to breathe.
No, they have the ability to hold their breath for long periods of time. (ie. whales, dolphins, etc.)
Whales and dolphins can't communicate under water
Dolphins don t breath under water. Mammals breath air. Every 15 min they go out of the water 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!!!!!!!!!!!!!!
They don't. When submerged, dolphins hold their breath.
whales and dolphins
Spotted dolphins can hold there breath under water for 7 to 8 minutes
They don't breathe under water, certainly not like fish do. When they dive they hold their breath, just like whales and dolphins do when they dive. They close their nostrils as they dive to prevent water from coming into their lungs, just as whales/dolphins close their blow-holes before they dive or submerge themselves in the water.
Whales and Dolphins are born under water and aren't fish.
killer whales are mammels there for need to come up to take in air.fish however can breath under water.fish also lay eggs but killer whales and dolphins give birth to a smaller version of themselves
Dolphins have gills so they can breath when they are under water
A shellfish will breathe under water by using tubes that are called siphons. These bring water into the animal and then push out the water that is carrying waste.