There are only seven species of sea turtles. Five of them are endangered. Turtles have existed for 215 million years. The leatherback sea turtles can weigh over 2,000 pounds. Turtles live on every continent except Antarctica. In all of Europe, there are only 2 species of turtles. Turtle shells are actually made of the turtles bones.

http://worldwildlife.org/species/sea-turtle

http://www.sciencekids.co.nz/sciencefacts/animals/turtle.html

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