front view of blue manna crab, sand crab. flower crab. portunus pelagicus on a white background. close-up photo of fresh

animal armatus atlantic blue callinectes chesapeake claw closeup crab crabbing crustacean crustaceans dorsal ecology ecotourism edible exoskeleton feast fest food fresh front gourmet invertebrate isolated male manna marina marine maryland nature object ocean pelagicus pincers portunus raw sandy sapidus sea seafood shell shellfish swimmer underside upside view wet white wildlife