Raie lisse vs ours blanc

Bathyraja brachyurops compared with Ursus maritimus

Key Differences

• Raie lisse is Near Threatened while ours blanc is Vulnerable.

Taxonomic Classification

Rank	Raie lisse	ours blanc
Kingdom same	Animalia (animal)	Animalia (animal)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Elasmobranchii	Mammalia (mammifères)
Order	Rajiformes (Rajiformes)	Carnivora (carnivores)
Family	Arhynchobatidae	Ursidae (Bears)
Genus	Bathyraja	Ursus (Bears)
Species	Bathyraja brachyurops	Ursus maritimus

Evolutionary Relationship

Raie lisse and ours blanc share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Raie lisse

NT — Near Threatened

ours blanc

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Raie lisse	ours blanc
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

Raie lisse

Habitat

Native to South America, inhabiting ecosystems characteristic of the region.

Range

Found in Chile. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

ours blanc

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.

Raie lisse

The Blonde ray (Bathyraja brachyurops) is a species in the genus Bathyraja. It is currently classified as Near Threatened on the IUCN Red List. Native to South America, inhabiting ecosystems characteristic of the region.

ours blanc

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.