Post #14408

Why do many crabs have one powerful and dangerous claw, while the other is frail and insignificant? If crabs were people, they would be guaranteed a path to arm wrestling champions. Judge for yourself: in many species one leg is small and frail, but the other grows two or even three times longer than it should be! But why and most importantly why? Is there really any benefit to this? Of course there is, we are talking about nature! Here, for example, are male beckoning crabs (photo 2). They use a large claw for the same purpose as human athletes - to fight each other. Moreover, these battles are bloody and cruel. During the battle, one of the fighters may lose his limb! If the male is lucky and the claw remains in place until mating season, he will lure females with it, waving it with all his might. And the bigger your paw, the easier it will be to seduce the lady of your heart. Why then is the second tiny hand needed? If a large claw provides a spectacle for the crab, then a small one provides bread. With it, the animal collects all the organic crumbs that it can find. This variety of paws has other uses. The coconut crab, aka the palm thief (photo 3), uses its more powerful claw for destruction. With it he breaks the shells of coconuts, the shells of dead crayfish or still living mollusks. And with the second, weaker claw, the animal delivers food to the mouth. Well, rainbow crabs (photo 4) found another, more sophisticated use for it. While the pumped up hand destroys, the weaker hand cuts. The small claw is longer, more graceful and equipped with special teeth. With its help it is so convenient to tear carrion into separate pieces! All of the above are just special cases of asymmetry that permeates all living organisms. Even people are symmetrical only at first glance. Our liver is located almost entirely on the right side of the body, and the spleen can only be found on the left. Yes, and look at your hands: with one of them you do everything, but with the other you cannot even write anything. Doesn't remind you of anything? BOOK OF ANIMALS Come to our Telegram. There you will find a whole mountain of interesting texts. They are in a row, just scroll up. There are deliberately rare, but the highest quality posts. Link - https://t.me/knigajivotnih1 🏀 Hit the hoop and get an NFT gift — https://t.me/BasketbolX_bot