Female Paper Nautilus - Agronauta hians; hitching a ride on Sea Grapes accompanied by juvenile Golden Trevally.
Only the Females of this species have shell and her shell is very thin like paper, hence the name. In the picture, one can practically see through the translucent shell.
''Argonauta hians'', also known as the winged argonaut, muddy argonaut or brown paper nautilus, is a species of pelagic octopus. The common name comes from the grey to brown coloured shell. The Chinese name for this species translates as "Grey Sea-horse's Nest". The female of the species, like all argonauts, creates a paper-thin eggcase that coils around the octopus much like the way a nautilus lives in its shell . The eggcase is characterised by a wide keel that gives it a square appearance, few.. more