Cavolinioidea
| Cavolinioidea | |
|---|---|
| An unidentified sea butterfly | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Clade: | Euopisthobranchia |
| Order: | Pteropoda |
| Suborder: | Euthecosomata |
| Superfamily: | Cavolinioidea (Gray, 1850) |
| Families | |
| |
The superfamily Cavolinioidea is the most speciose group of sea butterflies. They belong to the suborder Euthecosomata.
Sea butterflies (thecosomata) are pelagic marine gastropods, so called because they swim by flapping their wing-like parapodia.