a swimming marine mollusc that resembles a broad-bodied squid, having eight arms and two long tentacles that are used for grabbing prey. Its internal skeleton is the familiar cuttlebone, which it uses for adjusting buoyancy 墨鱼,乌贼
Order Sepioidea, class Cephalopoda: Sepia and other genera 乌贼目,头足纲: 乌贼属及其他属