It is a type of reptile that lives in the ocean, belonging to the order Turtles and family Turtles. Distributed in tropical and subtropical waters around the world, it feeds on seagrass, jellyfish, mollusks, and crustaceans. Long lifespan, some individuals can live to over 100 years old. The body is streamlined and the limbs have evolved into paddle shaped fins, making it very suitable for swimming in water. The shell is divided into the carapace and the plastron, with the carapace being their main protective structure and the plastron providing stability during swimming. The breeding method is special. Females will build nests and lay eggs on the beach, then bury the eggs in the sand and rely on the heat of the sun to naturally hatch. Many species are listed as endangered.

Also known as the leather turtle or stingy turtle, it is the largest surviving hard shell sea turtle in the world, renowned for its unique skin and massive size. Their characteristic is having a carapace without a bony shell, replaced by a layer of leathery skin covered in seven longitudinal ridges, which makes them very unique among sea turtles. Widely distributed in tropical and subtropical waters around the world, their living habits mainly involve swimming in the ocean, with jellyfish as their main source of food. The beak is particularly adapted to prey on jellyfish and can easily cut and swallow these soft prey. Large in size, it can grow to over 1.5 meters and weigh hundreds of kilograms.

It is a large sea turtle in the family Turtles. Widely distributed in tropical and subtropical waters around the world, it is named after its unique green fat layer. Large in size, adult individuals typically weigh 100 to 150 kilograms and can have a shell length of about 1 meter. Having flat limbs, adapted to swimming life in water. It is a herbivorous animal that mainly feeds on seagrass, and sometimes also consumes aquatic plants and algae. Living habits include long-term migration, especially females returning to their birthplace to lay eggs during the breeding season. The breeding process is very special. Females will dig caves on the beach to lay eggs, and then leave to let the eggs hatch naturally. Currently listed as an endangered species

It is a large sea turtle widely distributed in tropical and subtropical waters around the world. The carapace presents a unique brown or black color with yellow or orange markings, hence the name "hawksbill turtle". The lifespan can reach 70 to 80 years, or even longer. It feeds on seagrass, algae, and other marine plants, and occasionally preys on fish and crustaceans. The breeding habits are very unique, usually returning from the ocean to the beach every 2 to 3 years to lay eggs. Female hawksbill turtles will come ashore at night, choose a suitable location to dig sand pits, and lay hundreds of eggs. After hatching, young turtles will quickly head towards the sea and begin their journey of survival.

It is a larger species in the family Turtles. Widely distributed in warm waters around the world, it mainly feeds on seagrass and seaweed, and occasionally consumes jellyfish and mollusks. The shell is elliptical in shape, with colors ranging from olive green to dark brown. The scales on the shell are arranged neatly, providing excellent protection. The lifespan is relatively long, generally reaching around 80 years old. The breeding season usually occurs in summer, and females return to their place of birth to lay eggs, with each egg laying up to a hundred or more. Due to overfishing and habitat destruction, green sea turtles are currently listed as endangered species and require more protection measures.