Sea Turtless: The Contributs Of The Life Of Sea Turtles

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Sea turtles, sometimes called marine turtles, are reptiles of the order Testudines. There are seven extant species of sea turtles: the green, loggerhead, Kemp's ridley, olive ridley, hawksbill, flatback, and leatherback. The leatherback is the largest of all living sea turtles. Mature leatherbacks reach about 1.2 to 1.9 m (3.9-6.2 ft.) and 200 to 506 kg (441-1,116 lb.). The largest leatherback recorded weighed 916 kg (2,019 lb.). The Kemp's ridley and olive ridley are the smallest species, and reach about 55 to 75 cm (22-30 in.) and 30 to 50 kg (66-110 lb.). Sea turtle species have varied life spans ranging from 35-80 years, although some individuals have exceeded 200 years.Green sea turtles probably have the longest average life span…show more content…
Turtles have very unique eyes as they feature eyelids. The eyes are also where the saltwater they take in during eating is excreted which is why some will argue that sea turtles cry. The dorsal (top) side of the shell is called the carapace.Depending on species, the adult carapace ranges in shape from oval to heart-shaped. They have a very good sense of smell and use it to find prey. It is believed that the young also use it to find their way to the water for the first…show more content…
Like other turtles, sea turtles lack teeth. Jaw shape varies among species. Each species has a jaw shape adapted for its diet. Sea turtles, depending on the species, may eat seagrasses, algae, sponges, sea squirts, squid, shrimp, crabs, jellyfish, cuttlefish or sea cucumbers. Leatherbacks can dive to a depth of more than 1,000 meters (3,000 feet) in search of their prey, jellyfish. The hard-shelled species dive at shallower depths. The leatherback is adapted to deep dives because of its unique morphology.Other types of sea turtles can dive up to about a 300 meters (1,000 feet). The leatherback is the only sea turtle that does not have a hard shell. Instead, it bears a mosaic of bony plates beneath its leathery skin. It takes decades for sea turtles to reach sexual maturity. Mature turtles may migrate thousands of miles to reach breeding sites.After mating at sea, adult female sea turtles return to land to lay their eggs. The mature nesting female hauls herself onto the beach, nearly always at night, and finds suitable sand in
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