Green sea turtles are raised in deep water and live in water for life. The distribution of green sea turtles in the sea is closely related to the water depth, and most of them are concentrated in waters with a depth of 0-50 meters. According to the research, the distribution of green sea turtles in the sea is mainly in the waters near the edge of the ocean current and close to the shore, and there are not many in the main axis of the ocean current. In addition, the feeding habits and egg-laying activities of sea turtles themselves will also affect the distribution of sea turtles.

Green sea turtles use lungs to breathe, but their chests cannot move , is a kind of swallowing style of breathing. Every once in a while, you will put your head out of the sea to breathe. But it can also live underwater for a long time, because it also has an anal sac with specific respiratory function, that is, a pair of thin sacs on both sides of the rectum, and many microvessels are densely covered on the wall of the anal sac bag.