ALEXIS ROSENFELD / SCIENCE PHOTO LIBRARY ALEXIS ROSENFELD / SCIENCE PHOTO LIBRARY
Green turtle (Chelonia mydas) swimming alongside a watching scuba diver. The green turtle is found in tropical waters throughout the world. It is almost exclusively vegetarian, feeding on sea grasses and algae. It can reach 1.5 metres in length. Photographed in the Red Sea off Marsa Alam, Egypt, a popular diving resort.
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