Arctic Fingernailclam vs Schwertwal

Sphaerium nitidum compared with Orcinus orca

Key Differences

• Arctic Fingernailclam is Least Concern while Schwertwal is Data Deficient.

Taxonomic Classification

Rank	Arctic Fingernailclam	Schwertwal
Kingdom same	Animalia (Tier)	Animalia (Tier)
Phylum	Mollusca (Weichtiere)	Chordata (Chordatiere)
Class	Bivalvia (Muscheln)	Mammalia (Säugetiere)
Order	Sphaeriida (Sphaeriida)	Cetacea (Whales & Dolphins)
Family	Sphaeriidae	Delphinidae (Oceanic Dolphins)
Genus	Sphaerium	Orcinus (Orcas)
Species	Sphaerium nitidum	Orcinus orca

Evolutionary Relationship

Arctic Fingernailclam and Schwertwal share a common ancestor at the Kingdom level: Animalia. (Tier)

Conservation Status

Arctic Fingernailclam

LC — Least Concern

Schwertwal

DD — Data Deficient

Population: ~50.0K

Trend: Unknown ?

Physical Characteristics

Attribute	Arctic Fingernailclam	Schwertwal
Diet	—	Carnivore
Average Lifespan	—	50 years
Average Length	—	8.0 m
Average Weight	—	5.4 t

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.

Schwertwal

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 11 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (Taiwan), Europe (4 countries), and South America (Colombia, Ecuador, Venezuela).

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.

Schwertwal

The largest member of the dolphin family, orcas reach up to 9 meters and 6 tonnes and are found in every ocean from Arctic to Antarctic. Apex predators living in matrilineal pods with distinct dialects, hunting strategies, and cultural traditions that differ between populations. Some populations specialize in fish, others in marine mammals. No natural predators; orcas sit at the top of every marine food chain they inhabit.

Shared Countries

Both species can be found in 2 countries:

🇳🇴 Norway 🇸🇪 Sweden