| Sea turtles, the marine animals have survived on the | | | | they often have to travel great distances from the |
| Earth for 100 million years. They had been a kind of | | | | birth place to look for food. In this process, the sea |
| reptile living in the swamp area, and later evolved and | | | | turtles show a very superior navigation capability. This |
| adapted to ocean life. | | | | is a topic of great interest. Unfortunately, it remains a |
| Today, there are sea turtles surviving in the oceans | | | | mystery. But there are many explanations for this. |
| of worldâs tropical and subtropical regions, | | | | Some people think that sea turtles have their own |
| and they can be divided into eight species. Sea turtles | | | | compass and biological clock, they navigate according |
| are the largest marine reptiles now, in which the | | | | to the sunâs position and height orientation |
| leatherback turtles are the largest. The maximum | | | | during the day, at night they navigate by the stars. |
| body length of leatherback turtle is up to 2.5 meters | | | | Also there are some people think that the turtles |
| and weighs up to 100 kilograms, it is called the king | | | | have a remarkable memory of the smell of sea |
| of sea turtles. | | | | water when they first contact, so they rely on a |
| Most of the sea turtles have the habit of migratory, | | | | keen sense of smell to identify their way home. |