Oxynoidae
Thesse have an oval shell, and a very long thick tail. For defense, they secrete toxic/iritant chemicals, or, like a lizard, can shed part of their body, which keeps twitching while the animal crawls to safety.
Caliphyllidae
The best known genus here is Cyerce. These have flattened, often very colourful cerata which they move backwards and forwards like a butterflys' wing as they move.
Limapontiidae
Costastiella of "Sean the Sheep" fame, the colourful Stilliger spp. and the parasitic Ercolania spp. belong to this family.
They almost all have many cerata. Their "eyes" are located behind the rhinophores.
Plakobranchidae
In addition to Plakobranchus, Elysia and Thuridella belong to this family. They are all algae eaters that lack cerata.
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Oxynoidae
Oxynoidae
Thesse have an oval shell, and a very long thick tail. For defense, they secrete toxic/iritant chemicals, or, like a lizard, can shed part of their body, which keeps twitching while the animal crawls to safety.
Caliphyllidae
Caliphyllidae
The best known genus here is Cyerce. These have flattened, often very colourful cerata which they move backwards and forwards like a butterflys' wing as they move.
Limapontiidae
Limapontiidae
Costastiella of "Sean the Sheep" fame, the colourful Stilliger spp. and the parasitic Ercolania spp. belong to this family.
They almost all have many cerata. Their "eyes" are located behind the rhinophores.
Plakobranchidae
Plakobranchidae
In addition to Plakobranchus, Elysia and Thuridella belong to this family. They are all algae eaters that lack cerata.
