common grey sea slug vs Eurasian water shrew

Aeolidia papillosa compared with Neomys fodiens

Key Differences

• common grey sea slug is Least Concern while Eurasian water shrew is Endangered.

Taxonomic Classification

Rank	common grey sea slug	Eurasian water shrew
Kingdom same	Animalia (حيوانات)	Animalia (حيوانات)
Phylum	Mollusca (رخويات)	Chordata (حبليات)
Class	Gastropoda (بطنيات القدم)	Mammalia (ثدييات)
Order	Nudibranchia (عاريات الخيشوم)	Soricomorpha (زبابيات الشكل)
Family	Aeolidiidae	Soricidae
Genus	Aeolidia	Neomys
Species	Aeolidia papillosa	Neomys fodiens

Evolutionary Relationship

common grey sea slug and Eurasian water shrew share a common ancestor at the Kingdom level: Animalia. (حيوانات)

Conservation Status

common grey sea slug

LC — Least Concern

Eurasian water shrew

EN — Endangered

Physical Characteristics

Attribute	common grey sea slug	Eurasian water shrew
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

common grey sea slug

Habitat

Typically found in terrestrial and aquatic habitats including forests and freshwater.

Range

Distributed across Belgium, Chile, Denmark, Norway, and Sweden.

Eurasian water shrew

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Belgium, Denmark, Norway, Russia, and Sweden. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

common grey sea slug

<em>Aeolidia papillosa</em>, commonly known as the common grey sea slug, is a nudibranch mollusc belonging to the genus Aeolidia within the family Aeolidiidae. Despite the species name referencing terrestrial and aquatic habitats including forests and freshwater, <em>Aeolidia papillosa</em> is primarily a marine organism. Its range includes Belgium, Chile, Denmark, Norway, and Sweden, indicating a distribution across the North Atlantic and into South American waters. Common grey sea slug is assessed as Least Concern on the IUCN Red List. The species is typically found in intertidal and subtidal zones, where it preys on sea anemones and stores stinging cells from its prey in its dorsal cerata for defense. Biological traits of this species remain poorly documented in the scientific literature.

Eurasian water shrew

Eurasian water shrew (Neomys fodiens) is classified as Endangered (EN) on the IUCN Red List. At high risk of extinction in the wild, with significant population decline and ongoing threats to survival.

Shared Countries

Both species can be found in 4 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden