Blow fly vs common grey sea slug

Lucilia caesar compared with Aeolidia papillosa

Taxonomic Classification

Rank	Blow fly	common grey sea slug
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Arthropoda (Arthropods)	Mollusca (Mollusks)
Class	Insecta (Insects)	Gastropoda (Gastropoda)
Order	Diptera (Diptera)	Nudibranchia (Nudibranchia)
Family	Calliphoridae	Aeolidiidae
Genus	Lucilia	Aeolidia
Species	Lucilia caesar	Aeolidia papillosa

Evolutionary Relationship

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

Conservation Status

Blow fly

LC — Least Concern

common grey sea slug

LC — Least Concern

Physical Characteristics

Attribute	Blow fly	common grey sea slug
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Blow fly

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Denmark, Norway, Sweden, and United States.

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.

Blow fly

The Blow fly (Lucilia caesar) is a species in the genus Lucilia. It is currently classified as Least Concern on the IUCN Red List. Typically found in virtually all terrestrial and freshwater habitats.

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