Which specific characteristic sets Order Crocodilia apart from other reptiles like lizards, allowing them to breathe while submerged?

Answer

Having a secondary palate.

Members of Order Crocodilia possess a secondary palate, which is a distinct feature allowing them to breathe even when their mouth is full of water or submerged.

Which specific characteristic sets Order Crocodilia apart from other reptiles like lizards, allowing them to breathe while submerged?
animalclassificationalligatorreptile