Raya estrellada antártica vs Oso Polar

Amblyraja georgiana compared with Ursus maritimus

Key Differences

• Raya estrellada antártica is Data Deficient while Oso Polar is Vulnerable.

Taxonomic Classification

Rank	Raya estrellada antártica	Oso Polar
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (cordados)	Chordata (cordados)
Class	Elasmobranchii	Mammalia (mamíferos)
Order	Rajiformes (Rajiformes)	Carnivora (carnívoros)
Family	Rajidae	Ursidae (Bears)
Genus	Amblyraja	Ursus (Bears)
Species	Amblyraja georgiana	Ursus maritimus

Evolutionary Relationship

Raya estrellada antártica and Oso Polar share a common ancestor at the Phylum level: Chordata. (cordados)

Conservation Status

Raya estrellada antártica

DD — Data Deficient

Oso Polar

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Raya estrellada antártica	Oso Polar
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

Raya estrellada antártica

Habitat

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

Range

Found in Chile.

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.

Raya estrellada antártica

The Amblyraja georgiana (Amblyraja georgiana) is a species in the genus Amblyraja. Its conservation status is listed as Data Deficient, indicating insufficient data for assessment. Native to South 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.