Of course you can eat the crabs. The crab is no bigger than an adult's thumb and can be found everywhere in the sea in groups, making it very easy to get. After you catch it, wash it, marinate it with salt, wine, ginger, etc., and then put the whole thing in a stone mortar and mash it into a paste and put it in an altar, which is called "crab paste", which can be eaten with rice or dipped in whole rice cakes, and it's a wonderful flavor.

The crab is a genus of sand crabs in the order Decapoda. Cephalothorax armor trapezoidal. Front wide back narrow, narrow forehead, wide eye orbits, eyestalk elongated. Widely distributed in the global tropical and subtropical intertidal zone, is a warm-water with grouping of crabs. The crab is widely distributed in the intertidal zone of the tropical subtropical coast, there are more than 80 kinds of crabs in the world, its living habits and the tides have a close relationship with the tide, when the tide is high, it waved its chelipeds, as if beckoning the tide to rise quickly, so it is named "beckoning the tide of the crab". The crab likes to eat vegetarian food, such as water plants, vegetables are its food, the little guy is only the size of a thumbnail, the whole body of the black background blue spots, the eyes are long in the two long antennae. The eyes are on two long antennae, and the one big oar, which is not symmetrical with the body, is a very bright red color. Put it on the hand it will crawl quickly, but how to see it is not a crab, this tide crab is more like a spider.