Ferocious, territorial, extremely pugnacious, and fortunately only four inches long. In the background is the tentacle of a Giant Anemone Condylactus gigantea .
Unfortunately, the shot is clouded by condensation on the camera lens. The blue spots are incredibly intense, like LEDs. Lettuce Coral at upper-left, Common Brain Coral Diploria strigosa at lower-left.
Isopod means "same foot", a reference to the similar legs that are evident in the illustrations, as opposed to amphipods. Isopods are the most widespread of all arthropods, found from the highest mountaintops to the deepest seas. Most isopods are small, although some deep-sea types grow to over a foot in length. Isopods are mainly harmless scavengers, although some are parasites, and larger types can pack a painful bite.