Common Seal vs Dusky catshark

Phoca vitulina compared with Bythaelurus incanus

Key Differences

• Common Seal is Near Threatened while Dusky catshark is Data Deficient.

Taxonomic Classification

Rank	Common Seal	Dusky catshark
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (cordados)	Chordata (cordados)
Class	Mammalia (mamíferos)	Chondrichthyes (Cartilaginous Fish)
Order	Pinnipedia (Seals & Sea Lions)	Carcharhiniformes (Ground Sharks)
Family	Phocidae (True Seals)	Scyliorhinidae
Genus	Phoca (Harbor Seals)	Bythaelurus
Species	Phoca vitulina	Bythaelurus incanus

Evolutionary Relationship

Common Seal and Dusky catshark share a common ancestor at the Phylum level: Chordata. (cordados)

Conservation Status

Common Seal

NT — Near Threatened

Population: ~500.0K

Trend: Stable →

Dusky catshark

DD — Data Deficient

Physical Characteristics

Attribute	Common Seal	Dusky catshark
Diet	Carnivore	—
Average Lifespan	30 years	—
Average Length	1.7 m	—
Average Weight	80.0 kg	—

Habitat & Geographic Range

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.

Dusky catshark

Habitat

Typically found in marine environments from coastal waters to deep ocean.

Common Seal

O pinípede de distribuição mais ampla, a foca-comum (Phoca vitulina) habita as costas temperadas e subárticas do Atlântico Norte e do Pacífico Norte. Os adultos atingem até 130 kg e passam tempo aproximadamente igual no mar caçando peixes, lulas e crustáceos e descansando em praias ou rochas. Seus grandes e expressivos olhos são adaptados para a visão subaquática em pouca luz. A foca-comum é uma fonte de alimento fundamental para orcas, tubarões e ursos-polares.