The older the creatures, the longer the crabs, why?This phenomenon is called "crabization"

The crabs are powerful and delicious, which can be used as viewing and food.

There are many types of crabs, such as common hairy crabs, barracuda crabs, expensive emperor crabs, coconut crabs, plus hairstone crabs, porcelain crabs, frog crabs, and home crabs. It is worth noting that many of the names I mentioned just now are not crabs, and the reason why they have a "crab" in their names is because they are very similar to crabs in appearance. For example, Emperor Crab, which belongs to the deck of the stone crab family, is not a crab, but the home crab belongs to the family -owned crab family. From the perspective of kinship, the relationship between home crabs and shrimp is actually closer, so it is not a crab. As for coconut crabs, it can be regarded as a special residence crab. It belongs to the family of Luzuren Crab in biology. Obviously it is not a crab.

We just gave an example with the emperor crab, home crab and coconut crab. In the nature, there are many animals with the word "crab" in the name "crab" and the name "crab".

This is actually a very interesting thing. These animals are divided into different categories, and the living environment is different. Why does it evolve into crabs in the end? This phenomenon is called "crabization" in biology. Of course, not all animals have a tendency to crab. Although there are many types of animals in crabization, they basically have a common name, that is, "bugs". Some of these bugs live in the ocean, some live in the river, and some are completely "dry ducks", or "dry worms".

Why do bugs want to turn myself into crabs?

Let's think about this problem in a way that is easy to understand. Assuming that the world we live is a game, each creature is a character in this game, and a game character has two most basic attributes, attacks and attacks and defense. Let's think about, which attribute is the most important thing? In most games, players' preference for attacking is far better than defense, but in our game, because each character in this game is only the only life, so defense is the most important thing. In each creature, try to keep the defensive attributes high. Of course, for some relatively advanced life forms, they are not dependent on defensive attributes, because they can ensure their survival through speed, dodge, and hiding, but the bugs are not good.

The bugs are subject to their physical conditions and can only be able to defend the attributes. So how about?

The process of defense attributes of worms is actually very simple. Let us imagine that there is now a bug, as a basic protection, its back is covered with a layer of crustacean, so the most vulnerable part of its body is its tail, so this bug trys to try to try to as much as possible as possible Turning the tail curls inward, and the huge tail was stuffed into the stomach, which made its body grow larger and began to develop horizontally. Finally, the back armor became wider and the tail was completely rolled into the body. Very like a crab, this is probably a basic process of biological crab. In general, there are almost no weaknesses after crab -oriented creatures. To overcome them, they can only rely on the powerful power that can break their govern.

It can be seen that for the worms, becoming the "crab" seems to be the end of the evolution. No matter what evolutionary evolution was chosen in the early stage, it will eventually come back to the same way.

So, how do we distinguish between real crabs and looks like crabs? In fact, there are five main types of crabs: square crabs, barracudies, sand crabs, creek crabs and fan crabs. Fang Crab, as the name suggests, is similar to square shape. We are most familiar to hairy crabs in Fang Crab General. We generally think that hairy crabs are freshwater crabs, but in fact it is not just freshwater crab. Back to the sea in the sea, then return to the lake, and the little crabs will return to the land lake after hatching.

Barracuda crabs are the most commonly eaten sea crabs, while in addition to barracuda crabs, there are also blue crabs and crickets in the generals of Barracuda crabs.

Sand crab is also a very common class of crabs. When we go to the beach, the kind of small crabs that move fast on the beach are sand crabs, and the kind of pliers with large and small crabs also belong to sand crabs. Crab is the kind of small crabs in the stream, and the main representative of the fan crab is Qixing Crab. Of course, in addition to these five main crabs, there are some real crabs, such as strange spider crabs and bean crabs who are parasitic in shellfish seafood. Except for the above, the others are basically not crabs, but other "bugs" after crab -based, such as emperor crabs, coconut crabs, home crabs, frog crabs, porcelain crabs, etc. Just.

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