Harlequin shrimp (Hymenocera picta)

The harlequin shrimp is a species of saltwater shrimp found at coral reefs in the tropical Indian and Pacific oceans. They reach about 5 cm in length, live in pairs and feed exclusively on starfish. The Harlequin moves at a very slow pace and in waves. It also may have toxins from its prey (the starfish) which could make it distasteful and potentially dangerous for predators. The shrimp also moves its claws almost constantly.

photo credits: Chad Ordelheide, Steve Childs, Nathalie Rodrigues