What small animals are there at the bottom of the sea?

Small animals under the sea are: shrimp, turtles, dolphins, whales, starfish and so on.

1, sea shrimp

Sea shrimp, also known as red shrimp, red shrimp, big green shrimp and so on. , is the floorboard of aquatic products and shrimp meat or all. Shrimp is nutritious and delicious. Shrimp is mainly distributed in the Yellow Sea, Bohai Sea and the sea area north of the Yangtze River estuary, and it is a specialty of China.

2. tortoise

Tortoise belongs to tortoise, tortoise and tortoise. Widely distributed in Atlantic Ocean, Pacific Ocean and Indian Ocean. The body length can reach more than 1 m, and the maximum life span is about 150 years old. There are a pair of forehead scales on the top of the head, and the limbs are like paddles. The forelimbs are longer than the hind limbs, and there is a claw on the inside. The head, neck and limbs can't shrink into the nail, and they mainly feed on seaweed. It is a national second-class protected animal.

3.dolphins

Dolphin is an aquatic mammal, closely related to whales and porpoises. It evolved in the Miocene about 65438+ 1 100 million years ago, widely lived in shallow waters near the continental shelf, occasionally seen in fresh water, and mainly fed on fish and mollusks. Dolphins have a friendly appearance and naughty personality, and have always been very popular in human culture.

4.whales

There are two kinds of whales, one is baleen whale and the other is toothed whale. Whales belong to Chordata phylum, Vertebrate phylum, Mammalian phylum and Euvertebrate phylum, including about 98 viviparous mammals living in oceans and rivers. There are more than 30 species in China waters. All kinds of whales live in the sea except a few whales that live in fresh water.

5.starfish

Starfish are echinoderms in the class starfish. The body is flat, mostly symmetrical with five spokes, and the boundary between the body disk and the wrist is not obvious. There is a stepped groove on the ventral side of the wrist, and the tube foot extends out of the groove. The bone plate of endoskeleton is connected by connective tissue, which is elastic and flexible.