Australian sea lion vs European otter

Neophoca cinerea compared with Lutra lutra

Key Differences

Australian sea lion is Endangered while European otter is Vulnerable.

Taxonomic Classification

Rank	Australian sea lion	European otter
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order same	Carnivora (Carnivorans)	Carnivora (Carnivorans)
Family	Otariidae	Mustelidae (Weasels & Otters)
Genus	Neophoca	Lutra (Otters)
Species	Neophoca cinerea	Lutra lutra

Evolutionary Relationship

Australian sea lion and European otter share a common ancestor at the Order level: Carnivora. (Carnivorans)

View Order: Carnivora

Conservation Status

Australian sea lion

EN — Endangered

European otter

VU — Vulnerable

Trend: Stable →

Physical Characteristics

Attribute	Australian sea lion	European otter
Diet	—	Carnivore
Average Lifespan	—	10 years
Average Length	—	1.0 m
Average Weight	—	10.0 kg

Habitat & Geographic Range

Australian sea lion

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

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.

Australian sea lion

The Australian sea lion (Neophoca cinerea) is a species in the genus Neophoca. It is currently classified as Endangered on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.

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.