Arctic Hiatella vs Common Seal

Hiatella arctica compared with Phoca vitulina

Key Differences

Arctic Hiatella is Least Concern while Common Seal is Near Threatened.

Taxonomic Classification

Rank	Arctic Hiatella	Common Seal
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Bivalvia (Bivalvia)	Mammalia (Mammals)
Order	Adapedonta (Adapedonta)	Pinnipedia (Seals & Sea Lions)
Family	Hiatellidae	Phocidae (True Seals)
Genus	Hiatella	Phoca (Harbor Seals)
Species	Hiatella arctica	Phoca vitulina

Evolutionary Relationship

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

View Kingdom: Animalia

Conservation Status

Arctic Hiatella

LC — Least Concern

Common Seal

NT — Near Threatened

Population: ~500.0K

Trend: Stable →

Physical Characteristics

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

Habitat & Geographic Range

Arctic Hiatella

Habitat

Native to Africa and Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Widely distributed across Africa (South Africa), Europe (5 countries), North America (United States), and South America (Chile).

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.

Arctic Hiatella

The Arctic Hiatella (Hiatella arctica) is a species in the genus Hiatella. It is currently classified as Least Concern on the IUCN Red List. Native to Africa and Europe and North America, inhabiting ecosystems characteristic of the region.

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.