Green turtles

Green turtles are the general term for marine turtles. They are the only species of all turtles that live in the ocean. They are widely distributed and are distributed in the global waters except the Arctic Ocean. There is a shell on the back, and its pattern is more complicated than that of ordinary tortoises or river turtles. The shape of the shell is flat and streamlined, and its feet are paddle-shaped. The evolution history of sea turtles is quite long and can be traced back to the Cretaceous period 75 million years ago, when sea turtles were carnivorous. Such sea turtles are called ancient sea turtles. According to archaeological fossils found in North America, ancient sea turtles had a long body shape. Up to 3.5 meters, the size of a car, and the outer shell has obvious joints