balloon aeolis vs European otter

Eubranchus exiguus compared with Lutra lutra

Key Differences

balloon aeolis is Least Concern while European otter is Vulnerable.

Taxonomic Classification

Rank	balloon aeolis	European otter
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Gastropoda (Gastropoda)	Mammalia (Mammals)
Order	Nudibranchia (Nudibranchia)	Carnivora (Carnivorans)
Family	Eubranchidae	Mustelidae (Weasels & Otters)
Genus	Eubranchus	Lutra (Otters)
Species	Eubranchus exiguus	Lutra lutra

Evolutionary Relationship

balloon aeolis and European otter share a common ancestor at the Kingdom level: Animalia. (Animals)

View Kingdom: Animalia

Conservation Status

balloon aeolis

LC — Least Concern

European otter

VU — Vulnerable

Trend: Stable →

Physical Characteristics

Attribute	balloon aeolis	European otter
Diet	—	Carnivore
Average Lifespan	—	10 years
Average Length	—	1.0 m
Average Weight	—	10.0 kg

Habitat & Geographic Range

balloon aeolis

Habitat

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

Range

Distributed across Denmark, Norway, and Sweden.

European otter

Habitat

Typically found in diverse ecosystems where prey species are available.

Range

Found across Europe (6 countries). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

balloon aeolis

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

European otter

Sleek semi-aquatic mustelid found along clean rivers, streams, and coastlines across Europe and Asia. European otters can reach 1.3 meters in length and are highly skilled fish hunters, using sensitive whiskers to detect prey movements. Requiring unpolluted water with abundant fish, they are an indicator species for freshwater ecosystem health. Once nearly extinct in Western Europe from hunting and pollution, populations have recovered significantly following water quality improvements.