Helicocranchia pfefferi

The species is commonly called the piglet squid because of its rotund body shape and a large siphon that protrudes from above its eyes, resembling a snout. Its transparent body also contributes to its distinctive, somewhat cartoonish appearance. The overall look gives it a resemblance to a small pig floating in the water column.

Helicocranchia pfefferi is found in tropical and subtropical oceans worldwide, typically inhabiting mesopelagic and bathypelagic zones. It lives at depths ranging from the surface down to several hundred meters, depending on its life stage. The species has been observed and collected in both the Atlantic and Pacific Oceans.

The piglet squid is a small species, with mantle lengths generally reaching only a few centimeters in adults. Its compact, rounded body contributes to its piglet-like appearance. Despite its small size, it is a visually striking animal due to its transparency and unique proportions.

Helicocranchia pfefferi belongs to the family Cranchiidae, commonly known as the glass squids. This family includes many species with transparent bodies, particularly in their juvenile stages. Cranchiid squids are an important component of the deep-sea ecosystem and serve as prey for various marine predators.