This, friends, is a shrimp. Yes, it's called a harlequin shrimp, for good reason because it doesn't look like any shrimp you've ever been served. They're too small to eat, but are deadly predators to starfish. The harlequin shrimp is one of 6 strange-looking species you'll find in this list at Environmental Graffiti. Link -via the Presurfer
(Image credit: Flickr user MoToTo)