A harlequin swimming crab (Lissocarcinus laevis) sits on the seafloor of Lembeh Strait, Indonesia.

anemone crab animal animal behavior animal themes animals in the wild aquatic arthropod biogeography bizarre brachyura color image crab crustacean day decapoda ecology front view full length harlequin crab harlequin swimming crab hitchhiker crab horizontal indonesia lembeh lembeh strait lissocarcinus laevis looking at camera malacostraca marine biology no people ocean floor one animal outdoors pacific ocean pattern photography portrait portunidae sea life seabed seafloor southeast asia sulawesi swimming crabs undersea underwater wildlife