Arctic Fingernailclam vs Oso Polar

Sphaerium nitidum compared with Ursus maritimus

Key Differences

• Arctic Fingernailclam is Least Concern while Oso Polar is Vulnerable.

Taxonomic Classification

Rank	Arctic Fingernailclam	Oso Polar
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (moluscos)	Chordata (cordados)
Class	Bivalvia (Bivalvia)	Mammalia (mamíferos)
Order	Sphaeriida (Sphaeriida)	Carnivora (carnívoros)
Family	Sphaeriidae	Ursidae (Bears)
Genus	Sphaerium	Ursus (Bears)
Species	Sphaerium nitidum	Ursus maritimus

Evolutionary Relationship

Arctic Fingernailclam and Oso Polar share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Arctic Fingernailclam

LC — Least Concern

Oso Polar

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Arctic Fingernailclam	Oso Polar
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

Arctic Fingernailclam

Habitat

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

Range

Distributed across Norway, Sweden, and United States.

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.

Arctic Fingernailclam

The Arctic Fingernailclam (Sphaerium nitidum) is a species in the genus Sphaerium. It is currently classified as Least Concern on the IUCN Red List. Native to Europe and North America, 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