Blainville’s Beaked Whale vs European otter

Mesoplodon densirostris compared with Lutra lutra

Key Differences

• Blainville’s Beaked Whale is Data Deficient while European otter is Vulnerable.

Taxonomic Classification

Rank	Blainville’s Beaked Whale	European otter
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order	Cetacea (Whales & Dolphins)	Carnivora (Carnivorans)
Family	Hyperoodontidae	Mustelidae (Weasels & Otters)
Genus	Mesoplodon	Lutra (Otters)
Species	Mesoplodon densirostris	Lutra lutra

Evolutionary Relationship

Blainville’s Beaked Whale and European otter share a common ancestor at the Class level: Mammalia. (Mammals)

Conservation Status

Blainville’s Beaked Whale

DD — Data Deficient

European otter

VU — Vulnerable

Trend: Stable →

Physical Characteristics

Attribute	Blainville’s Beaked Whale	European otter
Diet	—	Carnivore
Average Lifespan	—	10 years
Average Length	—	1.0 m
Average Weight	—	10.0 kg

Habitat & Geographic Range

Blainville’s Beaked Whale

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia, Ecuador, Portugal, Sweden, and Taiwan.

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.

Blainville’s Beaked Whale

The Blainville’s Beaked Whale (Mesoplodon densirostris) is a species in the genus Mesoplodon. It is currently classified as Data Deficient 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.

Shared Countries

Both species can be found in 1 countries:

🇸🇪 Sweden