Vitreledonella richardi, also known as the glass octopus, is a transparent, gelatinous, and almost colorless meso- to bathypelagic octopod found worldwide in tropical and subtropical seas.

This cylindrical design, with the lens centered, results in a restricted horizontal field of vision, but is thought to be an adaptation that reduces the eye's silhouette when viewed from below as part of the animal's method of camouflage.

[5] The radula is heterodont, also known as heteroglossan, in which the middle or rhachidian tooth in each array has multiple cusps and the lateral teeth are unicuspid.

Once they got older, they lose that beak and form a faint, less developed one to eat softer-bodied prey.

[citation needed] Found mostly in the tropic and subtropic regions of seas worldwide, the glass octopus is prey to the feeding ecology of Northern bottlenose whales.