American crocodile

The American crocodile has lived on Earth for millions of years, but today their numbers are rapidly declining because they are hunted for their skins. These cold-blooded carnivorous reptiles have long pointy snouts full of sharp teeth. American crocodiles use their long tails and webbed feet to help them quickly swim through salty coastal waters.

Image credits: main image, Gerald and Buff Corsi/© California Academy of Sciences.