Superorder
Sacoglossa (Sacoglossans)
Hermaea oliviae. Photo: (c) jeffhamann, some rights reserved (CC BY-NC)
Sacoglossa, commonly known as the sacoglossans or the “sap-sucking sea slugs“, are a clade of small sea slugs and sea snails, marine gastropod mollusks that belong to the clade Heterobranchia. Sacoglossans live by ingesting the cellular contents of algae, hence the adjective “sap-sucking”.