What is a hermit crab and what does a hermit crab look like?

Hermit crabs are somewhere between shrimp and crabs, and most of them live in snail shells.

Hermit crabs are longer in size and can be divided into cephalothorax and abdomen, in which the cephalothorax has a cephalothorax, no last thoracic segment, the anterior part is narrower and calcified, and the posterior part is broader, or completely membranous, with a pronounced cervical groove, and the abdomen is long, straight or curly. Intuitively speaking, hermit crabs mostly live in snail shells, and their appearance is similar to shrimp and crabs.

The hermit crab has an asymmetrical body and tail segment, and has a pair of chelicera, which are used to feed on enemies. The first and second pairs have longer feet and are used for crawling, while the third and fourth pairs are smaller and are used to support the inner wall of the snail shell and stabilize the body. Hermit crabs live mainly in the shells of dead mollusks, most of which live in water and a few on land.

The habits of hermit crabs

Hermit crabs are mostly found on the coast of the Yellow Sea and the southern seas, and can usually be found in the rocky crevices of beaches and seashores, and sometimes it can be seen in other places such as bamboo knots, spike coconut shells, corals, sponges, etc. Hermit crabs are divided into marine and terrestrial species, with the species in the deep sea being sluggish and feeding on small or dead animals, while the species that are terrestrial and spike-dwelling are omnivorous and move quickly and will quickly escape and hide.

Hermit crabs usually crawl on the seashore or in shallow water, and in order to find a suitable house for themselves, they will attack the conch and tear the conch apart, and this shell will become the house of the hermit crab. When the hermit crab feels disturbed, it will immediately retract into the shell, hook the top of the shell with its tail, support the inner wall of the shell with a few short legs, and crawl with its long legs, holding the mouth of the shell with a large claw, so that it can avoid the enemy's damage.

Hermit crabs are mainly found on the coastal edges of the Yellow Sea and the southern seas, and generally live in the rocky crevices of the beach and the seaside. Hermit crabs use the snail shell as a parasite, and usually crawl with negative shells, and when frightened, they will immediately shrink their bodies into the snail shell. With the gradual growth of the crab body, the hermit crab will look for a new shell to change the shell, there are dozens of known hermit crab species, and the more common species in China's coastal areas are the square wrist hermit crab and the ctenophorus crab.

The square-wristed hermit crab is slightly larger than the ctenophorus hermit crab, and the maximum diameter of the hermit snail can reach more than 15 cm.

Hermit crabs are also known as "white houses" and "dry houses". It is famous for its fact that it often eats shells and other mollusks, taking other people's shells for itself. Hermit crab is mostly found along the coast of the Yellow Sea and the southern seas, and can usually be found in the rocky crevices of the beach and seaside, and sometimes it can be found in bamboo knots, spike coconut shells, corals, sponges, and other places.

As it grows, it will change to a different shell to live in.

It is edible, but the taste is not good.

Hermit crabs will look for new shells to change their shells, and they are all shells of other shells, so they are called hermit crabs.

Guess: It should also be an edible ......

It's not food, are you from Guangdong?

Eat dead fish and shrimp, feed some fish into the water or something.

No, because the crab has no shell on it.

[Hermit crab stall].

Hermit crab, the English name is hermit

crabs and hermit means hermit, which means that the hermit crab resembles a reclusive crab that hides in shells from time to time. It always lives on its back to its sojourning shell, and immediately retreats into the shell when it encounters enemies, this seemingly cowardly and incompetent personality, but its way of survival! On the sandy and muddy seabed, the shell of the hermit crab is like an oasis in the desert, the only place where many benthic organisms can stand, so with this home on its back, it can live well in many places where many other animals can't!

Hermit crabs belong to the heterotail group of arthropod crustaceans, the most obvious characteristics are the asymmetrical right-handed abdomen, the surface is soft and not covered by the carapace, making it easy to enter and exit the shell, and the degeneration of the abdominal limbs only leaves the barb of the tail, which can hook the shell shaft and not be pulled out by the enemy, and the fourth and fifth thoracopods are also atrophied and degenerated, allowing the body to retract more into the shell, these evolved characteristics make it very suitable for carrying the empty shell left by the shellfish after death.

Usually it is impossible to distinguish the sex of the hermit crab living in the shell from the appearance, unless it is a female holding eggs and the egg mass is exposed outside the shell, so it must be taken out of the shell to distinguish the sex. The sex of the hermit crab can be determined by the location of the genital orifice, which opens at the lumbar segment of the fifth pair of thoracic feet. The female is in the third pair of thoracopeds.

Basically, all hermit crabs are born in the sea, at least their larvae grow up in the sea, go through a period of plankton, and then emerge to a suitable habitat; Adult land-dwelling crabs, although they inhabit land near tropical seashores, still return to the beach to release their larvae or search for new shells.

Hermit crabs belong to the heterotail group of arthropod crustaceans, and the common hermit crabs can be divided into three categories: live hermit crabs, hermit crabs, and terrestrial hermit crabs. The adults of the family Hermit Crab live in coastal wetlands; The other two families live in the sea, and there are about 86 genera and 800 species of hermit crabs in the world.

The hermit crab is somewhere between a shrimp and a crab, and it needs to live in the shell of a dead mollusk.

In fact, it is more appropriate for hermit crabs to be called hermit shrimp, because hermit crabs are not crabs, but actually a type of shrimp. Shrimp belongs to the crustacean long-tailed suborder, and crab belongs to the crustacean short-tailed suborder, which shows that shrimp and crab are two animals of the same class but different suborders and different families. People on the seashore have been accustomed to calling it a hermit crab for a long time, so they have called it wrong until now.