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Sea turtles have been swimming in our oceans since the time of the dinosaurs. How much do you know about these shelled swimmers?
* Free the Leatherback * State of the World's Sea Turtles * The Leatherback Trust * CI Sea Turtle Flagship Program
While researching sea turtles in Australia, National Geographic's Crittercam team discovered a surprise in the eating habits of marine creatures.
Go to the shores of Gabon, where five of the world's seven sea turtle species, including this leatherback, come to nest.
Think your photo is the "Ultimate" winner? Submit your best in six different categories.
See how Lipton is dedicated to sustainable agriculture. View pictures from Boyd Matson's trip to Africa.
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