Mollusca

Most molluscs have shells, but some groups do not: octopods, slugs, and the gastropods known as sea slugs.

Cuttlefish

Regal Sea Goddess (Nudibranch)

Violet Aeolid (Nudibranch)

Common Octopus

European Squid

Spotted Sea Hare

White Spotted Octopus

Pinna Rudis

Triton's Trumpet

Thuridilla

Yellow Umbrella Slug