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Sea_Turtles

2013-11-13 来源: 类别: 更多范文

Sea Turtles Sea turtles are generally solitary creatures that remain submerged for much of the time they are at sea. There are five species of sea turtles. They live in shallow, warm, coastal waters. They formation of forelegs that are shaped like paddles makes them excellent swimmers but slow walkers. They are large animals that live 15 to 30 years. The Leatherback is the largest turtle that averages 90 kg. There were some recorded up to 550 kg. The so called green turtles feed on sea grass but others eat invertebrates including jellyfish. When it is not nesting season, sea turtles may migrate hundreds or even thousands of miles. The evidence suggests that their navigation works by sensing wave motions of the earth’s magnetic field. Sea turtles can sleep at the surface while in deep water or on the bottom wedged under rocks in near-shore waters. Green turtles have been seen sleeping under ledges in reefs and rocks. The mating for most sea turtles are believed to occur during a limited "receptive" period prior to the female's first nesting emergence. Afterwards, only females come ashore to nest. turtles, sea, eggs, males, females, waters, water, under, surface, several, nesting, years, time, shallow, season, sand, rocks, return, prior, own, live, lay, kg, high, green, first, even, coastal, being, been, animals, after, younglings, works, while, wedged
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