Why do shrimp swim at the bottom of the water?

If you don't swim, you'll be eaten by other carnivorous guys.

Shrimp swimming is very different from fish, the fish can swim forward by swinging the tail fin, while the shrimp does not have the tail fin like the fish, only a tail and many lower legs, and the shrimp also has its "high tricks". Shrimp are expert swimmers and can swim long distances with their legs.

When it swims, those swimming feet are like wooden paddles and frequently and neatly row backwards, and the body is slowly driven. When frightened, its belly flexes and stretches nimbly, and its tail strokes down and forward, and it can jump backwards continuously, and it is very fast. Some shrimp are not good swimmers, and large lobsters crawl on the sand and rocks on the bottom of the sea most of the time.

Because shrimp can only adapt to survive in seawater, they will die in fresh water. Oxygenation also doesn't work.

Shrimp live in shallow seas with muddy and sandy bottoms, and are very active during the day, often lurking in the mud, and are very active at night, swimming to the upper and middle layers of the sea from time to time to prey on other small zooplankton. It is distributed in the Yellow Sea, the Bohai Sea and the sea areas north of the Yangtze River estuary, and is a specialty of China.

Lobsters are larger than prawns, more than 30 cm long, and bright in color. The cephalothorax is harder and more abundant, the antennae are extremely developed, the second pair is longer and larger, the base is thick and spiny, and the tail is very large. Common ones such as splendid lobsters are distributed in the east and south China Seas.

The salt concentration of the shrimp body tissue is higher than that of the outside water, that is to say, the salt concentration of fresh water is low, the specific gravity is low, and the density is small.

The shrimp in the water depends on its terminal tail fan and abdominal limbs, i.e. swimming limbs (the flat one).By curvading the abdomen and tail, it can quickly swim backwards.

Shrimp xiā (crustacean arthropods).

Shrimp is an arthropod that lives in water, belonging to the arthropod crustaceans, and there are many species [1], including Antarctic red shrimp, green shrimp, river shrimp, grass shrimp, prawns, prawns, lobsters, etc. Shrimp has a high therapeutic nutritional value, can be steamed, fried and other practices, and can be used as Chinese herbal medicine.

Chinese scientific name: shrimp.

Kingdom: Animalia.

Phylum: Phylum Arthropods.

Class: Crustaceans.

Purpose: Decapacitus.

Distribution area: rivers, lakes and seas.

Shrimp are arthropods, and crabs form the decapod in the crustacea, the body of the decapod is divided into cephalothorax and abdomen, and the cephalothorax is covered by a hard shell, called the dorsal carapace. The cephalothorax has five pairs of forelegs, so it is called decapodium, and some shrimps have a pair of chelicerae in front of them, which is called chelicera. The abdomen has six segments, each segment has a pair of swimming feet, and the sixth pair of swimming feet expands into a caudal foot.

Although shrimp live in water, not all shrimp can swim in the water, some of them swim with their feet, such as freshwater shrimp and saltwater shrimp, and some can only crawl with their chest feet (forefeet), such as lobsters and crayfish.

Because the caudal feet and caudal peduncles of shrimps can form powerful swimming propellers, which can make shrimps move forward or backward quickly when moving, and the tentacles or appendages of shrimps are segmented, they will suddenly bend their abdomen and quickly flick their fan-like tails to escape when they are in danger.

When the shrimp swims, the left and right abdominal limbs are hooked with each other by small hooks and synchronized. Swing forward with multiple lower legs. It is possible to turn, forward, backward, etc.

When they stretch and retract where their abdomen is divided, and then stroke forward with their tails, they can quickly fall backwards.

Shrimp is a kind of long-bodied animal that lives in water, belonging to arthropod crustaceans, with many species, including green shrimp, river shrimp, grass shrimp, crayfish, prawns, prawns, prawns, jiwei shrimp, angler shrimp, lobsters, etc.

In terms of the body structure of the shrimp, in addition to having 5 pairs of "step feet" in the cephalothorax for crawling and predatoring, there are 5 pairs of swimming limbs like paddles under his abdomen, which generate power by paddling back and forth in the water, so that the shrimp can swim in the water, and there is a pair of tail fans formed by stubby tail limbs in the last section of the shrimp's abdomen, which is like the tail of an airplane to control the swimming direction of the shrimp; Of course, the shrimp can also bend its body and suddenly straighten out, creating a powerful thrust that allows it to leap forward in the water.

The legs on the abdomen act like the legs of a worm to keep water away, and then swim upright towards the head.

When swimming slowly, use your flippers to slowly pluck the water forward, and when you encounter danger, you will use your tail to pluck the water and quickly leave.

The body bends and then quickly straightens forward, relying on the tail fins to pull the water forward.

You can just look at the water tank in the vegetable market that sells seafood.

Hello, it is my pleasure to serve you and give you the following answer: shrimp is a common aquatic animal that is widely distributed in freshwater and seawater around the world. They are very important food, their meat is delicious, they have a good taste, and they provide people with nutritious food.

The living environment of shrimp in the water is very complex, and they need stable temperature, water quality and dissolved oxygen to grow and develop normally. If the water temperature is too high, the water is polluted, and the amount of dissolved oxygen is insufficient, it will lead to damage to the health of shrimp, various diseases, and even death. In order for shrimp to grow healthily in the water, it is necessary to test the water quality first to determine whether the water temperature, dissolved oxygen and other parameters meet the requirements.

If it does not meet the requirements, some measures can be taken to adjust, such as installing dissolved oxygen machines, adding aquatic plants, etc. to improve water quality. At the same time, it is necessary to change the water regularly and remove the dirt to maintain the stability of the water quality. In addition, some precautions can also be taken, such as checking the health of the shrimp, avoiding putting sick shrimp in the water, and regularly adding nutrients and antibiotics to keep the shrimp healthy.