The blue crab lives in oceans along the bays of North and South America. It mostly likes sea water, a mixture of fresh and salt water with parts of sea grasses and weeds. Like most sea animals, the blue crab has a stiff shell, or carapace.
The hard carapace and flexible talons of the crab make an animal that is well adapted to its life in the water. The back, or carapace, protects enemies from damaging the crab's body. Sometimes, the skin of the carapace sheds off and makes new skin cells.
Blue crabs mostly eat on clams, oysters, dead fish, and plants. Usually, they eat anything that they can find. Their eating habits are varied.
Blue crabs are related to lobsters and shrimps, but their development enables them to walk or run sideways and to burrow as well as swim. When most blue crabs walk or crawl, they have a limping movement.
Over-fishing, pollution, and the cost of energy, the prospect is small for increasing the yield of these types of fisheries. True blue crabs are too numerous to mention more than a few important families of crabs. These species of crabs are very important.
Most edible crabs have broad, oval bodies. The brackish, blue crabs have line patterns with paddle-like feet. These kinds of feet help blue crabs to have a better movement with their feet.
