Tortoise (turtle, turtle, turtle). Widely distributed in Atlantic Ocean, Pacific Ocean and Indian Ocean. Trionyx sinensis is distributed in Shandong in the north and Beibu Gulf in the south. The length can reach more than 1 m, and the maximum life span is about 150 years old.
Turtles live in the ocean all their lives. Feeding on fish, cephalopods, crustaceans and seaweed. April-10 is the breeding season, and females and males often mate on reefs or coastal waters for 3-4 hours.
After mating, the females climb the beach at night and dig a pit to lay eggs. They first dig a pit as deep as their height with their forelimbs, and then dig an "egg pit" with a diameter of 20 cm and a depth of about 50 cm through the alternating movement of their hind legs, which can lay up to 238 eggs.
Growth and reproduction of sea turtles;
April -65438+ 10 is the breeding season. Female and male turtles often mate for 3-4 hours in reef plates or coastal waters. After mating, the females climb the beach at night and dig holes to lay eggs. First, they dig a hole as deep as their height with their forelimbs, and then they lie in the hole. Then, through the alternate movement of their hind legs, they dig an "egg pit" with a diameter of 20 cm and a depth of about 50 cm, and lay eggs in the pit.
After laying eggs, cover the egg pit with sand, leave the beach and return to the sea. Can lay eggs 23 times a year, each time 9 1- 157, up to 238. Egg white, spherical, eggshell leathery, egg diameter 35-58 mm.
The incubation period is 30-90 days, usually 45-60 days. After hatching, the young turtles crawl back to the sea to live. China, Huidong, Guangdong and the coastal areas of Xisha Islands in Hainan are spawning and breeding grounds for turtles. The service life can reach more than 100 years. According to Guinness World Records, the longest life span of sea turtles can reach 152 years, and it is a well-deserved longevity star among animals.