Science: Zoology: Ancient Sea Turtles

Sea turtles breathe air, but they can breathe underwater when they need to. Sea turtles have immunity to jellyfish sting and eat even the deadly box jellyfish. There are seven living species of sea turtle (leatherback, loggerhead, green, hawksbill, Kemp's ridley, olive ridley, and Australian flatback), all of which came into existence in the late Cretaceous period between 60 and 100 million years ago. All existing sea turtle species are endangered.

Fossil records trace the existence of sea turtles to about 200 million years ago. Archelon is the name given to a 70-million-year-old fossil marine turtle.

Read more at All About Reptiles.