Dwarf round ray vs Eisbär

Urotrygon nana compared with Ursus maritimus

Key Differences

• Dwarf round ray is Near Threatened while Eisbär is Vulnerable.

Taxonomic Classification

Rank	Dwarf round ray	Eisbär
Kingdom same	Animalia (Tier)	Animalia (Tier)
Phylum same	Chordata (Chordatiere)	Chordata (Chordatiere)
Class	Elasmobranchii	Mammalia (Säugetiere)
Order	Myliobatiformes (Stechrochenartige)	Carnivora (Raubtiere)
Family	Urotrygonidae	Ursidae (Bears)
Genus	Urotrygon	Ursus (Bears)
Species	Urotrygon nana	Ursus maritimus

Evolutionary Relationship

Dwarf round ray and Eisbär share a common ancestor at the Phylum level: Chordata. (Chordatiere)

Conservation Status

Dwarf round ray

NT — Near Threatened

Eisbär

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Dwarf round ray	Eisbär
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

Dwarf round ray

Eisbär

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.

Eisbär

The largest land carnivore on Earth, polar bears can exceed 700 kg and are found across Arctic sea ice from Canada to Russia. Highly specialized marine mammals that rely on sea ice to hunt ringed and bearded seals. Excellent swimmers capable of covering vast distances in open water. Listed as Vulnerable, with populations under severe pressure from rapid Arctic sea ice loss due to climate change.