They don't, any aquatic reptile needs to return to the surface to breathe after a while, the only creatures that can breather underwater are fish (and all their variants ie: sharks, stingrays etc)
Crocodiles have nostrils on the top of their snouts.
Like most crocodiles, the purpose is to breath with it.
Yes. Crocodiles do not have gills, as they hold their breath when underwater.
NO! they live on land
theyy hunt
up to 2 hours, maybe more
They live! (Swim, eat, breath, Hunt and breed)
hold its breath
They only have one respriatory system and it is similar to humans. They breath oxygen from ther air with their lungs. When they are underwater they simply hold their breath (and can do so for a very long time). They do not breath water with gills like fish.
they aren't born yet so they don't need to breath.
no they do not. they can only breath in water.
the snail uses its mantle to breath