Scavenging sea stars and a humpback shrimp (Pandalus hypsinotus) working on the remains of a rock crab, Canada, North America

animal animal themes animals hunting aquatic arthropod biodiversity brachyura british columbia canada cancer gracilis cancridae caridea chela chordata claw color image crab crustacean danger dangerous dead animals decapod decapoda eat eating ecology ecosystem environment environmental fauna feeding food chain horizontal humpback shrimp hunting malacostraca marine biology metacarcinus metacarcinus gracilis no people ocean life outdoors pandalid shrimp pandalidae pandalus pandalus hypsinotus photography prawn rock crab sand scavenger scavenging sea life sea stars seastar shrimp slender crab star fish starfish threat three animals toyama shrimp undersea underwater wildlife zoology