The graceful decorator crab (Oregonia gracilis), attaches organisms to its back, British Columbia, Canada, North America

animal animal behavior animal limbs animal themes aquatic arthropod brachyura british columbia canada chordata color image crab crustacean decapod decapoda fauna graceful decorator crab high angle view horizontal malacostraca marine biology no people ocean life one animal oregonia oregonia gracilis oregoniidae outdoors pacific ocean photography porifera sea life sponge undersea underwater wildlife zoology