Whales breath air just like we do through their nose which in their case is the blowhole on the top of their head. If they do not make it to the surface every so often then they will drown. They can hold their breath because they have a large lung capacity.
Because they are mammals and not fish therefore they do not have gills. Gills process the water so that the oxygen can get into the blood stream where as mammals have lungs, if a whale breathes in under water its lungs would just fill with water and so would drown
Whales don't breathe under water. They're air-breathing mammals with lungs. When they dive they hold their breath.
Blue whales are mammals. They breathe air with lungs, pretty much just like you and I. When they dive, they hold their breath.
no but they can hold their breathe for long periods of time
Adult gray whales can stay underwater for approximately 10 - 15 minutes.
about a day
whales an not breath under waterno they can hold their breath under water for long periods of time but come up to the surface for airNo they can't. They take a big breath of air above the surface then they just hold their breath for a long time.
Sharks and whales have completely different structures and organs. A shark is actually a fish and has gills, while a whale is a mammal and can only breathe with its lung like all mammals. Fish have gills to allow them to breathe underwater. Sharks do not need to come to the surface to breathe.
Yes whales can stay under water for more than an hour, unless they are still babies then they need to have oxygen sooner.
40 minutes
Hippos can't "breath" underwater but they can hold their breath for long periods of time.
No, they have to surface to breathe. They can go a long time between breaths though.
Crocs as well as alligators CAN'T breathe underwater. When they dive, they hold their breath.
They have gills. They do not breathe the same air that we do.