Blainville’s Beaked Whale vs Common Seal

Mesoplodon densirostris compared with Phoca vitulina

Key Differences

• Blainville’s Beaked Whale is Data Deficient while Common Seal is Near Threatened.

Taxonomic Classification

Rank	Blainville’s Beaked Whale	Common Seal
Kingdom same	Animalia (hewan)	Animalia (hewan)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (mamalia)	Mammalia (mamalia)
Order	Cetacea (Whales & Dolphins)	Pinnipedia (Seals & Sea Lions)
Family	Hyperoodontidae	Phocidae (True Seals)
Genus	Mesoplodon	Phoca (Harbor Seals)
Species	Mesoplodon densirostris	Phoca vitulina

Evolutionary Relationship

Blainville’s Beaked Whale and Common Seal share a common ancestor at the Class level: Mammalia. (mamalia)

Conservation Status

Blainville’s Beaked Whale

DD — Data Deficient

Common Seal

NT — Near Threatened

Population: ~500.0K

Trend: Stable →

Physical Characteristics

Attribute	Blainville’s Beaked Whale	Common Seal
Diet	—	Carnivore
Average Lifespan	—	30 years
Average Length	—	1.7 m
Average Weight	—	80.0 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.

Common Seal

Habitat

Typically found in diverse ecosystems where prey species are available.

Range

Found across Europe (7 countries) and North America (United States). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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.

Common Seal

The most widely distributed pinniped, harbor seals inhabit temperate and subarctic coastal waters of both the North Atlantic and North Pacific. Adults reach up to 130 kg and spend roughly equal time at sea hunting fish, squid, and crustaceans and hauling out on beaches or rocks to rest. Their large, expressive eyes are adapted for underwater vision in low light. Harbor seals are a critical food source for orcas, sharks, and polar bears.

Shared Countries

Both species can be found in 2 countries:

🇵🇹 Portugal 🇸🇪 Sweden