Ash Dieback vs common grey sea slug

Hymenoscyphus fraxineus compared with Aeolidia papillosa

Key Differences

• Ash Dieback is Not Evaluated while common grey sea slug is Least Concern.

Taxonomic Classification

Rank	Ash Dieback	common grey sea slug
Kingdom	Fungi (Fungi)	Animalia (Animals)
Phylum	Ascomycota (Sac Fungi)	Mollusca (Mollusks)
Class	Leotiomycetes (Leotiomycetes)	Gastropoda (Gastropoda)
Order	Helotiales (Helotiales)	Nudibranchia (Nudibranchia)
Family	Helotiaceae	Aeolidiidae
Genus	Hymenoscyphus	Aeolidia
Species	Hymenoscyphus fraxineus	Aeolidia papillosa

Conservation Status

Ash Dieback

NE — Not Evaluated

common grey sea slug

LC — Least Concern

Physical Characteristics

Attribute	Ash Dieback	common grey sea slug
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Ash Dieback

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Found across Europe (8 countries).

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.

Ash Dieback

Ash dieback (Hymenoscyphus fraxineus) is a species in the genus Hymenoscyphus. Native to Europe, inhabiting ecosystems characteristic of the region.

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.

Shared Countries

Both species can be found in 3 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden