Big eye chimaera vs Oso Polar

Hydrolagus macrophthalmus compared with Ursus maritimus

Key Differences

• Big eye chimaera is Least Concern while Oso Polar is Vulnerable.

Taxonomic Classification

Rank	Big eye chimaera	Oso Polar
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (cordados)	Chordata (cordados)
Class	Holocephali (Holocephali)	Mammalia (mamíferos)
Order	Chimaeriformes (Chimaeriformes)	Carnivora (carnívoros)
Family	Chimaeridae	Ursidae (Bears)
Genus	Hydrolagus	Ursus (Bears)
Species	Hydrolagus macrophthalmus	Ursus maritimus

Evolutionary Relationship

Big eye chimaera and Oso Polar share a common ancestor at the Phylum level: Chordata. (cordados)

Conservation Status

Big eye chimaera

LC — Least Concern

Oso Polar

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Big eye chimaera	Oso Polar
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

Big eye chimaera

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.

Big eye chimaera

The Big eye chimaera (Hydrolagus macrophthalmus) is a species in the genus Hydrolagus. It is currently classified as Least Concern on the IUCN Red List. 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.