Crabs are familiar to us and can often be seen as a kind of animal. They belong to crustaceans.Crustaceans are a relatively low level of animals, but although they do not have very advanced organs and structures, they have the most basic structures, such as their mouths.As crustaceans, crabs also have mouths.If you look closely, you can easily see their mouths.Crab's mouth is located under their two eyes, basically directly below the eyes, looks like a few pieces of armor like things, can move, this is the crab's mouth.
As mentioned above, crabs have mouths, and their mouths can also play an important role in carrying out various life activities.The crab's mouth can play a role in their feeding.However, although crabs have mouths, they do not call.Because they have no vocal cords, they can't make their own voice.
When in the water, crabs may make some sounds.But these sounds are not their calls, but the sounds they make when they spit bubbles or slap the water.These sounds are not made by themselves, and naturally can not be counted as their calls.
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