Pelicans at least.
In penguins, it actually helps them during their dive to conserve air. However, I am not sure how it is cured in pet birds.
Kingfishers like all birds do not have teeth.
Submarines dive by opening vent valves that allow sea water to push air out of their ballast tanks.
Crocodiles don't generally dive, the slide into the water from a bank and swim close to the surface to break for air.
Penguins are birds and like all birds they get oxygen by breathing air.
No..They are birds, and birds don't live in water._____________________________Eagles are large birds; they primarily live in the air. Eagles nest in tall trees, on the edges of cliffs or on tall buildings.Eagles are excellent fishers; they can see fish swimming in the lakes and rivers below them, swoop down and capture the fish in their talons. Occasionally, they misjudge the distance and hit the water. In this case, if uninjured, the eagle is capable of taking off from the water.
Dolphins are mammals. They breathe air with lungs, pretty much just like you and I. They can't breathe water. When they dive they hold their breath.
Along with standing and walking, they can be used to dive and swim. When landing on water they are used as skis when slowing down (geese and mallards landing (sic) are quite spectacular); on take off they can be used to run on the water to get air speed.
their is no air in the water
Otters can't breathe under water. They're mammals, they breathe air, with lungs. When they dive, they hold their breath.
Three types of air pressure are temperature water vapor elevation
they live in the air with birds