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Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
(unranked): clade Heterobranchia
clade Euthyneura
clade Euopisthobranchia

clade Cephalaspidea

Superfamily: Diaphanoidea

See text.

Diaphanoidea is a taxonomic superfamily of small sea snails, marine opisthobranch gastropod mollusks or micromollusks in the Cephalaspidea, the headshield slugs and bubble snails.

Species in this superfamily have small, flimsy, almost globular shells, known as paper bubble gastropod shells.

This superfamily is not monophyletic.[1]


Species in this superfamily are found in cold seas, such as the Arctic region, Antarctica, Australia, and New Zealand.


The species occur in the sublitoral to abyssal zones.

Shell description[edit]

The shell is minute, thin, fragile, colorless to translucent, and usually less than 5 mm in size. The overall shape is ovate, pear-shaped, and bulbous. There is a sunken apex.


Families in the superfamily Diaphanoidea include:


External links[edit]