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There are seven types of sea turtles of which six are endangered. Sea turtles are some of the oldest creatures on Earth, dating back 220 million years. They can be found in all oceans of the world except for the polar re... More »

www.reference.com Pets & Animals Reptiles Turtles

A turtle's shell is actually part of its spine and its rib cage, and the turtle can't crawl out of it even if it wanted to. It's not made out of bone, but of keratin, the same material that makes up human nails, antelope... More »

www.reference.com Pets & Animals Reptiles Turtles

Sea turtles in some form have existed on Earth for as long as 250 million years. Evidence of their existence can be found in fossils from the Jurassic Era. More »

www.reference.com Pets & Animals Reptiles Turtles
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While it's difficult to determine the exact lifespan of a particular species of sea turtle, some sea turtles have been known to live 50 years or more. They have a similar lifespan to humans. More »

www.reference.com Pets & Animals Reptiles Turtles

There are several species of sea turtles, and the diets of these animals vary. Carnivorous sea turtles eat meat, while herbivorous sea turtles are plant eaters. Sea turtles that are omnivores eat both types of foods. More »

www.reference.com Pets & Animals Reptiles Turtles

While adult sea turtles have few natural predators, large sharks, such as the tiger shark, have been known to eat sea turtles. Killer whales have also been known to prey on sea turtles. Baby sea turtles are preyed upon b... More »

www.reference.com Pets & Animals Reptiles Turtles

A group of sea turtles is commonly referred to as a bale. There are seven species of sea turtles: leatherback, green sea turtle, loggerhead, Kemp's ridley sea turtle, hawksbill, flatback and olive ridley sea turtle. More »

www.reference.com Pets & Animals Reptiles Turtles