60~70 cm long. An adult turtle weighs about 45 kg and the carapace is slightly oval. This turtle is mainly distributed in shallow waters, where rocky areas meet sandy areas. Main food for the Olive Ridley sea turtle is crustaceans. This turtle is less commonly seen in Taiwan, but has been seen in Nanfang’ao, Kinmen, and Lanyu.
External characteristics: two pairs of prefrontal scales; 5~7 plates of central scutes; 5~9 pairs of lateral scutes (in a stripped shape); and one pair of claws on the forelimbs.