Aeolidia papillosa, known as the common grey sea slug, is a species of nudibranch in the family Aeolidiidae. [1] This nudibranch species thrives in cold-temperate waters in the Northern Hemisphere on the Atlantic coast of The British Isles and Northern Europe, the Atlantic coast of North America, and the north Pacific Coast of North America.

It is the largest Aeolid in the British Isles growing up to 12 cm in length. This sea slug has a characteristic white V-shaped mark on the front of its head. The front tentacles are cone-shaped with thick dark coloured bases and white tips.

Pleurobranchaea maculata, or the grey side-gilled slug, is a species of sea slug, specifically a side-gill slug or notaspidean. It is a marine gastropod mollusc in the family Pleurobranchaeidae. [1]

As its name suggests, the grey side-gilled sea slug has a feathery gill on the right side of its body. It has no shell, is soft bellied and slow moving. It is active when it is hungry – both day and night.

Aeolidia papillosa, known as the common grey sea slug, is a species of nudibranch in the family Aeolidiidae. Aeolidia papillosa can be easily identified by its large number of cylindrical cerata covering its body except for a triangular area that extends from the rhinophores to …

Sea slug is a common name for some marine invertebrates with varying levels of resemblance to terrestrial slugs. Most creatures known as sea slugs are gastropods, i.e. they are sea snails (marine gastropod mollusks) that, over evolutionary time, have either entirely lost their shells or have seemingly lost their shells due to having a ...

The grey sea slug can be found around the British Isles and into the colder northern waters of Europe, and despite its name, can be found in a range of colours, including yellow, brown or purple at the base.

A small colourful sea slug that can be found grazing on sea mats on the rocky shore and beyond the low water mark.

Mar 27, 2025 · Common grey sea slug. Print Download. Concarneau Bay, France, on shore, 2006, WBN. Classification. Source : World Register of Marine Species Dernière mise à jour 30-01-2023 Animalia (Kingdom) Mollusca (Phylum) Gastropoda (Class) Heterobranchia (Subclass) Euthyneura (Infraclass)

the common grey sea-slug, is found on shores and in shallow water all around the UK. The animal pictured was at around the mid-shore level having been uncovered by the ebbing tide on the mrth coast of Cornwall on a sunny day in February 2003. As the colouration indicates the common grey sea-slug may not be grey at all and identification guides note