Akeridae is a small taxonomic family of sea snails, marine gastropod molluscs belonging to the superfamily Akeroidea, the sea hares. The family, in its original spelling "Aceridae", has previously been attributed in error to Pilsbry, 1893.
Akeridae is the only family in the superfamily.
Genera and species in the family Akeridae
- Genus Anderssonia
- Genus Akera O.F. Müller, 1776 A primitive genus. These sea hares do not fit completely in their external shell; it just covers their visceral rear end. The streamlined body is designed for burrowing.
- Akera bayeri (Marcus & Marcus, 1967). It can be found along the coast of Colombia and Brazil. It has not yet been described.
- Akera bullata (O.F. Müller, 1776). It is the only European representative of this species. It occurs from Norway to Canaries, and also in the Mediterranean. It is a herbivorous bottom dweller (up to 370 m deep), feeding on seagrasses of the genera Zostera and Posidonia. The body has a maximum length of about 6 cm. Its color varies from gray to orange, with white or dark specks. Its fragile and smooth shell is white or brown. This sea hare is not an agile swimmer. It uses its broad parapodia (fleshy protrusions), held together funnelwise above the head, to paddle away when disturbed.
- Akera julieae Valdes & Barwick 2005
- Akera soluta (Gmelin, 1791). Also called the Solute akera, this species can be found in the Indo-West Pacific. Little is known about this species. Its shell can grow up to 45 mm in length.
- †Akera striatella Lamarck, 1804 (fossil from the Eocene and Oligocene)
- Akera tasmanica Beddome 1883