Polar bear vs wedge-tailed shearwater

Ursus maritimus compared with Puffinus pacificus

Key Differences

Polar bear is Vulnerable while wedge-tailed shearwater is Least Concern.

Taxonomic Classification

Rank	Polar bear	wedge-tailed shearwater
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Carnivora (Carnivorans)	Procellariiformes (Procellariiformes)
Family	Ursidae (Bears)	Procellariidae
Genus	Ursus (Bears)	Puffinus
Species	Ursus maritimus	Puffinus pacificus

Evolutionary Relationship

Polar bear and wedge-tailed shearwater share a common ancestor at the Phylum level: Chordata. (Chordates)

View Phylum: Chordata

Conservation Status

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

wedge-tailed shearwater

LC — Least Concern

Physical Characteristics

Attribute	Polar bear	wedge-tailed shearwater
Diet	Carnivore	—
Average Lifespan	25 years	—
Average Length	2.4 m	—
Average Weight	450.0 kg	—

Habitat & Geographic Range

Polar bear

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.

wedge-tailed shearwater

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Found in Colombia.

Polar bear

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.