Common Seal vs Flat Periwinkle

Phoca vitulina compared with Littorina obtusata

Key Differences

Common Seal is Near Threatened while Flat Periwinkle is Least Concern.

Taxonomic Classification

Rank	Common Seal	Flat Periwinkle
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (cordados)	Mollusca (Moluscos)
Class	Mammalia (mamíferos)	Gastropoda (Gastrópodes)
Order	Pinnipedia (Seals & Sea Lions)	Littorinimorpha (Littorinimorpha)
Family	Phocidae (True Seals)	Littorinidae
Genus	Phoca (Harbor Seals)	Littorina
Species	Phoca vitulina	Littorina obtusata

Evolutionary Relationship

Common Seal and Flat Periwinkle share a common ancestor at the Kingdom level: Animalia. (Animals)

View Kingdom: Animalia

Conservation Status

Common Seal

NT — Near Threatened

Population: ~500.0K

Trend: Stable →

Flat Periwinkle

LC — Least Concern

Physical Characteristics

Attribute	Common Seal	Flat Periwinkle
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.

Flat Periwinkle

Habitat

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

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

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.