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.
Greece, Thessalia, Magnisia, Alonnisos, Chrisi Milia, at 3 m depth, collected 2004-08-00, ex coll. J. Trausel. Image by Joop Trausel and Frans Slieker.