Atlantic Ancula vs Rock Foam

Ancula gibbosa compared with Stereocaulon saxatile

Key Differences

• Atlantic Ancula is Least Concern while Rock Foam is Near Threatened.

Taxonomic Classification

Rank	Atlantic Ancula	Rock Foam
Kingdom	Animalia (Animals)	Fungi (Fungi)
Phylum	Mollusca (Mollusks)	Ascomycota (Sac Fungi)
Class	Gastropoda (Gastropoda)	Lecanoromycetes (Lecanoromycetes)
Order	Nudibranchia (Nudibranchia)	Lecanorales (Lecanorales)
Family	Goniodorididae	Stereocaulaceae
Genus	Ancula	Stereocaulon
Species	Ancula gibbosa	Stereocaulon saxatile

Conservation Status

Atlantic Ancula

LC — Least Concern

Rock Foam

NT — Near Threatened

Physical Characteristics

Attribute	Atlantic Ancula	Rock Foam
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Atlantic Ancula

Habitat

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

Range

Distributed across Denmark, Norway, and Sweden.

Rock Foam

Habitat

Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, Sweden, and United States. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Atlantic Ancula

The Atlantic Ancula (Ancula gibbosa) is a species in the genus Ancula. It is currently classified as Least Concern on the IUCN Red List. Typically found in terrestrial and aquatic habitats including forests and freshwater.

Shared Countries

Both species can be found in 3 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden