common grey sea slug vs Cuetzalan Salamander

Aeolidia papillosa compared with Aquiloeurycea quetzalanensis

Key Differences

• common grey sea slug is Least Concern while Cuetzalan Salamander is Critically Endangered.

Taxonomic Classification

Rank	common grey sea slug	Cuetzalan Salamander
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Gastropoda (Gastropoda)	Amphibia (Amphibians)
Order	Nudibranchia (Nudibranchia)	Caudata (Caudata)
Family	Aeolidiidae	Plethodontidae
Genus	Aeolidia	Aquiloeurycea
Species	Aeolidia papillosa	Aquiloeurycea quetzalanensis

Evolutionary Relationship

common grey sea slug and Cuetzalan Salamander share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

common grey sea slug

LC — Least Concern

Cuetzalan Salamander

CR — Critically Endangered

Physical Characteristics

Attribute	common grey sea slug	Cuetzalan Salamander
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.

Cuetzalan Salamander

Habitat

Found across multiple habitat types including tropical and subtropical coniferous forests, tropical and subtropical grasslands and savannas, and Mediterranean forests and woodlands, among 6 distinct biome types spanning the Nearctic and Neotropic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Found in Mexico. Currently classified as Critically 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.