Clione limacina

Overview

Cowles’ university account describes a slender transparent body, orange-gold viscera and lateral foot extensions used in swimming. Two anterior antennae are often visible. Three pairs of buccal cones normally remain retracted; the quiet swimming phase therefore does not show a permanently tentacled mouth.

The aquarium account describes juvenile shells lost before adulthood and predation on swimming sea butterflies. Extended feeding cones grasp prey, then retract after feeding. The illustration shows a shell-less adult at rest, distinguishing ordinary swimming anatomy from a hunting phase.

The university account places the animal among gastropod molluscs and gymnosomes and describes feeding specialisation on Limacina in its regional observations. Aquarium distribution concerns northern Atlantic and Arctic waters; these regional accounts are retained separately rather than made into a new genetic or global taxonomic revision.

Origins & earliest records

A university anatomy account and aquarium natural history describe complementary life stages.

Evidence & interpretation

University anatomy and aquarium life history support the selected adult swimming phase.

Selected bibliography

Documented works and useful reading. This is not a list of every appearance.

1. 01

   Clione limacina

   Dave Cowles · 2026

2. 02

   Sea Angel

   Aquarium of the Pacific · 2026

Family, evolution & connections

Taxonomic classification

A hierarchy of classified groups, not a chain of direct ancestors.

Source note: Swimming anatomy and broad classification are described; no new molecular relationship is inferred.

1. PhylumMollusca
2. ClassGastropoda
3. GroupGymnosomata

References

Sources supporting this profile. Linked pages have their own scope and editorial standards.

1. Institutional species accountUniversity anatomy accountResearch access: 2026-10-11
2. Retained indexed institutional textAdult life historyResearch access: 2026-10-11

Image credits

AI transparent sea angel with paired swimming wings.

AI interpretation of an adult swimming sea angel; water imagined.