Percnon gibbesi

Percnon gibbesi is a species of crab.[2] It is one of at least two species commonly called "Sally Lightfoot" (the other being the semi-terrestrial Grapsus grapsus from the Pacific coast of the Americas), and is also referred to as the nimble spray crab[1] or urchin crab.[3] It has been described as "the most invasive decapod species to enter the Mediterranean".[2]