Anaspidea

The clade Anaspidea, commonly known as sea hares (Aplysia species and related genera), are medium-sized to very large opisthobranch gastropod molluscs with a soft internal shell made of protein. These are marine gastropod molluscs in the superfamilies Aplysioidea and Akeroidea.

"Sea hare" redirects here. For the fairy tale, see The Sea-Hare.
"Sea bag" redirects here. For the type of luggage, see Duffel bag.
This article is about the clade of gastropod molluscs. For the similarly named clade of extinct jawless fishes, see Anaspida. For the informal group of reptiles, see Anapsida. For the freshwater crustacean family, see Anaspididae.

Anaspidea
Aplysia californica, a typical sea hare displaying inking behavior
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Heterobranchia
Clade: Euopisthobranchia
Clade: Anaspidea
P. Fischer, 1883
Families
Synonyms

Aplysiomorpha

The common name "sea hare" is a direct translation from Latin: lepus marinus, as the animal's existence was known in Roman times. The name derives from their rounded shape and from the two long rhinophores that project upward from their heads and that somewhat resemble the ears of a hare.

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