Callinectes sapidus, commonly known as the blue crab, is a species of crab found primarily along the Atlantic coast of North America. It is easily recognized by its blue-tinted claws and olive-green shell. Blue crabs inhabit estuaries and coastal waters, where they play a vital role in the ecosystem as both predators and prey. This species is also significant in commercial and recreational fishing. Blue crabs are a popular seafood choice, known for their sweet, tender meat. They are typically harvested during the warmer months and are an important part of the culinary traditions in regions like Chesapeake Bay.