American Jack Knife Clam vs Oso Polar

Ensis leei compared with Ursus maritimus

Key Differences

• American Jack Knife Clam is Not Evaluated while Oso Polar is Vulnerable.

Taxonomic Classification

Rank	American Jack Knife Clam	Oso Polar
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (moluscos)	Chordata (cordados)
Class	Bivalvia (Bivalvia)	Mammalia (mamíferos)
Order	Adapedonta (Adapedonta)	Carnivora (carnívoros)
Family	Pharidae	Ursidae (Bears)
Genus	Ensis	Ursus (Bears)
Species	Ensis leei	Ursus maritimus

Evolutionary Relationship

American Jack Knife Clam and Oso Polar share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

American Jack Knife Clam

NE — Not Evaluated

Oso Polar

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	American Jack Knife Clam	Oso Polar
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

American Jack Knife Clam

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Found across Europe (6 countries).

Oso Polar

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and boreal forests and taiga, among 4 distinct biome types within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found in Norway. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

American Jack Knife Clam

The American Jack Knife Clam (Ensis leei) is a species in the genus Ensis. Native to Europe, inhabiting ecosystems characteristic of the region.

Oso Polar

El mayor carnivoro terrestre de la Tierra, el oso polar puede superar los 700 kg y se encuentra en el hielo marino del Artico, desde Canada hasta Rusia. Es un mamifero marino altamente especializado que depende del hielo marino para cazar focas anilladas y barbadas. Excelente nadador capaz de cubrir grandes distancias en agua abierta. Clasificado como Vulnerable, sus poblaciones soportan una presion severa por la rapida perdida de hielo marino artico debida al cambio climatico.

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway