California moray eel

California moray eels are long slim snakelike fish. They sport bodies light to dark brown or green color. Unlike most fishes moray eels have no pelvic fins, pectoral fins, or gill covers. Most fish breathe by closing and opening their gill covers to force water over their gills. Without gill covers moray eels must constantly open and close their mouths to breathe, so they appear to be gasping for breath.