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Tardigrades, which are usually less than 1 mm long, can be found in almost every...
On the Galapagos Islands, William Dampier wrote excitedly of the giant tortoises he...
Green Sea Turtle
A diet of algae and seagrasses gives this turtle (Chelonia mydas) greenish colored...
A spectacled caiman (Caiman crocodiles) patrols a salty pond at the Smithsonian...