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Hawksbill sea turtle (Eretmochelys imbricata) Sea turtles: there are seven extant species of sea turtles, which live mostly along the tropical and subtropical coastlines, though some do migrate long distances and have been known to travel as far north as Scandinavia. Sea turtles are largely solitary animals, though some do form large, though ...
Sea turtles can be found in all oceans except for the polar regions. The flatback sea turtle is found solely on the northern coast of Australia. The Kemp's ridley sea turtle is found solely in the Gulf of Mexico and along the East Coast of the United States. [30] Sea turtles are generally found in the waters over continental shelves.
Male and female turtles mate in the water, and the males return to deep sea to feed. For several weeks, female sea turtles alternate between mating in the water and laying their eggs on land. Before laying her eggs, a female turtle will dig a hole in the sand with her hind flippers. She covers it with sand and returns to the ocean.
Sea turtles, and several extinct forms, have evolved a bony secondary palate which completely separates the oral and nasal cavities. [30] The necks of turtles are highly flexible, possibly to compensate for their rigid shells. Some species, like sea turtles, have short necks while others, such as snake-necked turtles, have long ones.
Desmatochelys was a large sea turtle, with some specimens reaching up to 2 meters long. [4] Members of the genus are characterized by the extended skull roof, large nasal bones, and a paddle-like humerus, as well as a distinct body shell or carapace and reduced plastron like other protostegids.
Kemp's ridley is the smallest of all sea turtle species, reaching maturity at 58–70 cm (23–28 in) carapace length and weighing only 36–45 kg (79–99 lb). [13] Typical of sea turtles, it has a dorsoventrally depressed body with specially adapted flipper-like front limbs and a beak.
The loggerhead sea turtle (Caretta caretta) is a species of oceanic turtle distributed throughout the world. It is a marine reptile, belonging to the family Cheloniidae.The average loggerhead measures around 90 cm (35 in) in carapace length when fully grown.
The olive ridley sea turtle (Lepidochelys olivacea), also known commonly as the Pacific ridley sea turtle, is a species of turtle in the family Cheloniidae. The species is the second-smallest [ 4 ] [ 5 ] and most abundant of all sea turtles found in the world.