European otter vs white chalice-bubble

Lutra lutra compared with Cylichna alba

Key Differences

European otter is Vulnerable while white chalice-bubble is Not Evaluated.

Taxonomic Classification

Rank	European otter	white chalice-bubble
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Mollusca (Mollusks)
Class	Mammalia (Mammals)	Gastropoda (Gastropoda)
Order	Carnivora (Carnivorans)	Cephalaspidea (Cephalaspidea)
Family	Mustelidae (Weasels & Otters)	Cylichnidae
Genus	Lutra (Otters)	Cylichna
Species	Lutra lutra	Cylichna alba

Evolutionary Relationship

European otter and white chalice-bubble share a common ancestor at the Kingdom level: Animalia. (Animals)

View Kingdom: Animalia

Conservation Status

European otter

VU — Vulnerable

Trend: Stable →

white chalice-bubble

NE — Not Evaluated

Physical Characteristics

Attribute	European otter	white chalice-bubble
Diet	Carnivore	—
Average Lifespan	10 years	—
Average Length	1.0 m	—
Average Weight	10.0 kg	—

Habitat & Geographic Range

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.

white chalice-bubble

Habitat

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

Range

Distributed across Norway, Sweden, and United States.

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.