Blue crabs are a popular type of crustacean found along the Atlantic coast of the United States. They are easily recognized by their vibrant blue claws and olive-green shells. These crabs thrive in estuaries and coastal waters, where they hunt for food like fish, clams, and other small marine creatures. In addition to being a delicious seafood choice, blue crabs play an important role in the ecosystem. They help maintain the balance of marine life by controlling the population of their prey. Many people enjoy crabbing as a recreational activity, and blue crab dishes are a staple in Southern cuisine.