Argonauta hians, or the winged argonaut, also known as the muddy argonaut or brown paper nautilus, is a species of pelagic octopus. The common name comes from the grey to brown coloured shell.
Cephalopode Transparent : Grimalditeuthis Richardi. Le Transparence de ces mollusques est si parfaite qu'il devient parfois difficile de deisinguer l'ensemble de leur corps; en revanche, elle permet de faire de curieuses observations sur les fonctions de certains de leur organes
Helicocranchia sp., ventral view of specimen from the vicinity of Kauai, partially restored. In this figure the mantle is scarcely represented as sufficiently elongate and the arms are probably shown as much too short and stocky.