Crab is a crustacean, in our daily life is more common.The characteristics of crabs are very obvious, and the hard shell is one of their obvious characteristics.Crabs will shed their shells, which is an essential step in their growth process, and normal crabs will shed their shells.They shed their shells to show that they have grown up.Crabs molt because their shells do not grow as slowly as the bodies of other animals, but only by molting.
When crabs molt, they first absorb the calcium carbonate in their shells into their own body fluids.Then, they grow a layer of wrinkles in their shells, which look softer.At this time, the old shell will slowly take off, and the new shell will be opened by this fold and become.Finally, the crab will inject the calcium carbonate into the new shell, which will become harder.
As mentioned above, crabs can shed their shells, which represents their body growth.In fact, crabs can take off their shells more than once in their life, generally speaking, at least a dozen times.Crabs molt at all stages of their life, and not just once.From big-eyed larvae, to young crabs, young crabs, to adult crabs, will go through several exuviations before they can.Specifically, how often crabs take off their shells is not certain, depending on the speed of their own growth and development.Generally speaking, the fastest 2 weeks or so can take off once, and slower when it takes about two months to take off once.
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