The Living Habits of Sea Turtles

Published: 21st December 2009
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Sea turtles, the marine animals have survived on the Earth for 100 million years. They had been a kind of reptile living in the swamp area, and later evolved and adapted to ocean life.



Today, there are sea turtles surviving in the oceans of world's tropical and subtropical regions, and they can be divided into eight species. Sea turtles are the largest marine reptiles now, in which the leatherback turtles are the largest. The maximum body length of leatherback turtle is up to 2.5 meters and weighs up to 100 kilograms, it is called the king of sea turtles.



Most of the sea turtles have the habit of migratory, they often have to travel great distances from the birth place to look for food. In this process, the sea turtles show a very superior navigation capability. This is a topic of great interest. Unfortunately, it remains a mystery. But there are many explanations for this. Some people think that sea turtles have their own compass and biological clock, they navigate according to the sun's position and height orientation during the day, at night they navigate by the stars. Also there are some people think that the turtles have a remarkable memory of the smell of sea water when they first contact, so they rely on a keen sense of smell to identify their way home.



The size of sea turtles is different according to their type and age. Sea turtles do not have gills, so they must always surface for air about every half mile. Sea turtles have already adapted to the life in the sea, they do not need to drink fresh water. They are vigorous and can swim in the water for a very long time.



Sea turtle is a long-lived animals, it can reach up to 50 years old or more. From May to August each year is the turtles' reproductive season. At that time, they traveled to their native land and climbed ashore, dug a hole very flexible. They put the eggs in the hole and buried with sand. Each time the sea turtles lay 50-200 pieces of eggs, the size and the shape of the eggs looked like table-tennis balls.



The turtle eggs buried in the sand also face with a variety of threats--seawater inundation and natural erosion, and some even can not hatch. The incubation period is about two months, after that the small turtles break their shell and climb up on the ground after several days of efforts. In general, the small turtles climb out of the sand in the night, they climb into the sea instinctively under the moon and the guidance of the stars.



Now, nearly all the species of sea turtles are listed as endangered animals. The number of sea turtles is declining year by year. Find more about sea turtles and the situation of sea turtles on Sea Turtle Protection. It is an organization dedicated to the conservation of sea turtles. You can join in the organization and become a volunteer to protect the endangered sea turtles.



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