a large (2.5 cm or 1 in.) nocturnal isopod, Ligea oceanica, that lives in cracks in rocks or walls around the high-water mark
noun 1. a nudibranch. noun 1. any of various shell-less marine gastropod molluscs, esp those of the order Nudibranchia See nudibranch sea slug Any of various colorful marine gastropods of the suborder Nudibranchia, lacking a shell and gills but having fringelike projections that serve as respiratory organs. Also called nudibranch.
noun 1. steam fog. noun, Meteorology. 1. fog caused by cold air flowing over a body of comparatively warm water, the vapor condensing in small convective columns near the water surface and giving the appearance of smoke or steam.
noun, plural (especially collectively) seasnail (especially referring to two or more kinds or species) seasnails. 1. any of several snailfishes of the genus Liparis, of the North Atlantic. 2. any of several marine gastropods having a spirally coiled shell, as a whelk.
noun 1. any of several venomous marine snakes of the family Hydrophidae, having a finlike tail. noun 1. any venomous snake of the family Hydrophiidae, of tropical seas, that swims by means of a laterally compressed oarlike tail