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.
up to 2 hours, maybe more
They live! (Swim, eat, breath, Hunt and breed)
NO! they live on land
theyy hunt
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.
hold its breath
Crocodiles have specialized muscles that allow them to open and close a flap in the back of their throat, called the glottis, allowing them to breathe while submerged underwater. They can hold their breath for extended periods of time by slowing down their metabolic rate and conserving oxygen.
no they do not. they can only breath in water.