Why do crabs spit bubbles, why do crabs spit bubbles

Why does the crab always like to spit bubbles, and is it playing?

The crab breathes with gills, its gills grow on both sides of the back of the body, and are made up of many gill pieces like sponges, which can suck in a lot of water, and when it leaves the water, for a certain period of time, it can also breathe with the water in the gills.

The crab spits bubbles, which is caused by the way it breathes.

Crabs, like fish, are animals that breathe through their gills, but fish breathe by sucking water into their mouths and then passing water through their gills. Crab breathing, on the other hand, is to suck water out of the gills and then squirt water out of the outlets on both sides of the mouth.

When the crab leaves the water, a part of the water in the gills is discharged from both sides of the mouthpart, and a certain amount of oxygen is dissolved after contact with the air, and then inhaled into the body through the small hole below the mouthpart to obtain oxygen, so that the crab can move on land for a long time. When there is less water in the gills and more air is inhaled, a small amount of water and air is spit out, and it becomes bubbles.

Caused by respiration. The crab breathes with its gills, which are hidden under its jacket like a sponge.

Crab foaming is caused by the crab's unique breathing pattern, which can be inhaled by the gills.

A lot of water, it can live on land by the water in the gills, and after the oxygen in the gills is consumed, it will flow back into the body from the bottom of the chelicerae, and when the water passes through the body, the fresh oxygen will melt in, so the crab can breathe in the water like a fish.

But as time goes on, the water in the gills gradually decreases, and the crab twitches its mouth.

The cheeks try to absorb water, but they inhale a lot of air, and the air mixes with the water in the gills to form many bubbles.

Summary. Hello <>, I'm glad to answer your question Crab spit bubbles because crabs are breathing. Crabs need to keep their gills moist in order to be able to breathe properly. When on land, crabs only use water stored in their gills to keep their gills moist and thus breathe.

Why do crabs spit bubbles.

Hello <>, I'm glad to answer your question Crab spit bubbles because crabs are breathing. Crabs need to keep their gills moist in order to be able to breathe properly. When on land, crabs only use water stored in their gills to keep their gills moist and thus breathe.

Kiss, crabs are crustaceans whose bodies are protected by a hard shell and breathe by their gills. Taxonomicly, it is the same animal as shrimp, lobster, and hermit crab. The vast majority of species of crabs live in the sea or near the sea, but some inhabit freshwater or land.

Common crabs include pike crabs, open-sea pike crabs, blue crabs, and Chinese mitten crabs (river crabs, hairy crabs, and clear water crabs).

Crabs spit bubbles because the crab inhales too much air, and the contact area between the crab and the air is large, and the moisture contained in the gills is spit out together with the air, forming countless bubbles.

In addition, crabs still breathe with their gills on land, and the crab spits bubbles to indicate that the crab is fresh and alive, and the quality of the crab can be judged according to the degree of the crab spitting bubbles.

Crabs do not need to add water to spit bubbles, because crabs rely on the gills on both sides to breathe, and spitting bubbles is the natural breathing phenomenon of crabs leaving the water and entering the land.

How to choose a crab:

1. When selecting crabs, look at the crab shell to be green, the crab belly should be white and not black, and the crab tail is raised high, the navel is protruding, and it is relatively full to pinch it by hand.

2. Take the crab through the sun or light, look at the edge of the crab cover, if there is a gap visible in the translucent, the crab is relatively empty and has no meat.

3. Look at the vitality of the crab, turn the crab over, and it can be quickly flipped back, indicating that the vitality is strong and fresh. You can also touch the crab's eyes with your hands, the eyeballs rotate flexibly, or spit bubbles in your mouth, indicating that the crab is relatively fresh.