pachygrapsus marmoratus common known as marbled rock crab amalgamate with rock. sea crab

pachygrapsus marmoratus common known as marbled rock crab amalgamate sea merge stone shell carapace mimicry fuse dark marbling yellow interflow animal claw crustacean wildlife seafood water closeup brown coast ocean creature aquatic shore nature shellfish fauna tropical eye camouflage no people hide zoology mediterranean crawfish wild reflection grey underwater marine seashore sun