Cavolinioidea

The superfamily Cavolinioidea is the most speciose group of sea butterflies. They belong to the suborder Euthecosomata.

Cavolinioidea
An unidentified sea butterfly
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Heterobranchia
Clade: Euopisthobranchia
Order: Pteropoda
Suborder: Euthecosomata
Superfamily: Cavolinioidea
(Gray, 1850)
Families

Sea butterflies (thecosomata) are pelagic marine gastropods, so called because they swim by flapping their wing-like parapodia.

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