Video encyclopedia



Mucky Secrets - Part 18 - Sea Slugs inc. Nudibranchs - Lembeh Strait


Ragged Sea Hare Bursatella leachii Blainville, 1817 (Opisthobranchia: Euopisthobranchia: Aplysiidae)


Opisthobranchia of Koh Tao - Cephalaspidea or 'Headshield Slugs'


Movement in Elysia sp. (Mollusca, Opisthobranchia)


Beating pericardium in Elysia sp. (Mollusca, Opisthobranchia)

Opisthobranchs are a large and diverse group of specialized complex gastropods that used to be united in the subclass Opisthobranchia, but are no longer considered to represent a monophyletic grouping because it contains land snails and slugs, the Pulmonata. Euopisthobranchia is a revised collection of opisthobranchs that is monophyletic, but this group leaves out some "traditional" opisthobranchs including the Sacoglossa and the Acochlidiacea. The subclass Heterobranchia now contains the species which used to be assigned to Opisthobranchia plus the Pulmonata.
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    • Taxonomy 

    • Description 

    • Ecology 

    • Defense 

    • Diet 

    • Communication 

    • Reproduction