A diverse group of animals which includes nudibranchs, octopus, squid and bivalves.

- Common octopus (Octopus vulgaris)
- Common octopus (Octopus vulgaris)
- Common cuttlefish (Sepia officinalis)
- European squid (Loligo vulgaris)
- Elegant sea slug (Hypselodoris elegans)
- Purple nudibranch (Flabellina affinis)
- Elysia (Elysia viridis)
- Small sea hare (Aplysia punctata)?
- Spiny file shell (Lima lima)?