Amphitretus pelagicus Hoyle, 1885

Amphitretus pelagicus is very unique an Octopus. Body is gelatinous and translucent, it's like a jellyfish. This is pelagic species of open waters. Habitat is from near surface depths to at least 2,000 m.

This individual was found in -5m at Osezaki Shizuoka Japan on 27th November 2014.
Osezaki is a part to coast of Suruga Bay.

This individual size is about 100mm ML.

Dorsal view of Amphitretus pelagicus

Many chromatophores are on inner body, and small chromatophores are on web.

Lateral view of Amphitretus pelagicus

Eyes like a periscope, it's to the dorsal side.

Arms and web of Amphitretus pelagicus

Suckers is one row at proximally and two rows at near the tips.

Upside-down pose of Amphitretus pelagicus

Arms can enclose the head. Perhaps, it's for defense.

REFERENCES:
Amphitretus - Tree of Life Web Project

Jereb,P., Roper,C.F.E.,Norman,M.D.,Julian,K.F., 2014. Cephalopods of the World. An annotated and illustrated catalogue of Cephalopod species known to date Volume 3 Octopods and Vampire Squids. FAO Species Catalogue for Fishery Purposes No.4, Vol.3. 382pp.