Choucka bastarda vs ours blanc

Gymnura altavela compared with Ursus maritimus

Key Differences

• Choucka bastarda is Endangered while ours blanc is Vulnerable.

Taxonomic Classification

Rank	Choucka bastarda	ours blanc
Kingdom same	Animalia (animal)	Animalia (animal)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Elasmobranchii	Mammalia (mammifères)
Order	Myliobatiformes (Myliobatiformes)	Carnivora (carnivores)
Family	Gymnuridae	Ursidae (Bears)
Genus	Gymnura	Ursus (Bears)
Species	Gymnura altavela	Ursus maritimus

Evolutionary Relationship

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

Conservation Status

Choucka bastarda

EN — Endangered

ours blanc

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

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

Habitat & Geographic Range

Choucka bastarda

Habitat

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

Range

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

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.

Choucka bastarda

The Butterfly ray (Gymnura altavela) is a species in the genus Gymnura. It is currently classified as Endangered 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.