D. Parer & E. Parer-Cook / Paper Nautilus (Argonauta nodosa) eggs hatching, Port Phillip Bay, Victoria, Australia

GEORGETTE DOUWMA / Paper nautilus / Greater argonaut (Argonauta argo) Bali, Indonesia.

Nature Production / Greater Argonaut {Argonauta argo} feeding on small fish, captive, Japan

Nature Production / Winged argonaut / Brown Paper Nautilus {Argonauta hians} female with shell, Japan

Nature Production / Greater Argonaut {Argonauta argo} captive, Japan

David Shale / Paper argonaut (Argonauta sp) Gulf of Mexico, deep sea species. Shallow living epipelagic animal, collected in a sample fished in the upper 200m of the tropical NE Atlantic.

Fred Bavendam / Paper Nautilus (Argonauta nodosa) is actually a pelagic Octopus, females make the parchment-like shell to carry incubating eggs, South Australia

David Shale / Paper argonaut {Argonauta sp} Gulf of Mexico deepsea

Fred Bavendam / Knobbed argonaut (Argonauta nodosa) female, showing extended mantle covering part of shell, a defensive behaviour allowing use of chromatophores in the mantle to alter color of shell, South Australia,...

Fred Bavendam / Knobbed argonaut (Argonauta nodosa) female, portrait, South Australia, Great Australian Bight.

Fred Bavendam / Knobbed argonaut (Argonauta nodosa) female, showing extended mantle covering part of shell, a defensive behaviour allowing use of chromatophores in the mantle to alter color of shell, Port Phillip Bay...

Doug Perrine / Colonial salp chain (Salpidae), with tiny (about 1cm) Cephalopod sheltering inside one of the blastozooids, probably a male or immature female Argonaut / Paper nautilus (Argonauta sp.), drifting in su...