Sunday, August 14, 2011

Sea turtle






In spring and summertime, females crawl onto nesting beaches during the night. They venture far enough so that they the reach the hightide mark. The female loggerhead then finds a suitable nesting site and once found, she digs a hole using her front limbs, lays her eggs in the nest (clutches are usually 120 eggs), and uses her hind limbs to bury her eggs. The eggs incubate for between 31 and 65 days. When they hatch, the young turtles move quickly to the water.

Green sea turtles have persisted since prehistoric times, but are endangered today. Only a small fraction of hatchlings survive and even fewer go on to reach adulthood and reproduce.

Andre is believed to be about 25 years old. The hope is that he will swim off, mate often and help his species survive.

Go out and live long and prosper and have lots of babies,” said Aaron Lichtig, a 40-year-old science teacher who was among those who first spotted the turtle and brought him to shore.

A moment later, he disappeared below the surface, only to pop his head up a few more times, delighting the crowd.

It’s just an inspiration,” said one volunteer, 17-year-old Kelly Griffith, who wiped tears from her eyes. “Every turtle is special, but he captures hearts.”

Sea turtle (or seaturtle) is the common name for any of the large marine turtles comprising the superfamily Chelonioidea, characterized by forelimbs in the form of large flippers or paddles. There are two extant families, Cheloniidae and Dermochelyidae. Members of the family Cheloniidae are characterized by a lightweight, low shell covered with scutes, while the sole extant species in Dermochelyidae, the leatherback sea turtle (Dermochelys coriacea), is characterized by a teardrop shaped carapace lacking epidermal scutes and covered with a leathery skin. Members of both families have a large head that cannot be retracted into the shells. There are seven living species, arranged into six genera. Three extinct genera also are recognized. Sea turtles are found worldwide in all the world's oceans except perhaps the Arctic Ocean.

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