East Asian river prawn vs Polar bear

Macrobrachium nipponense compared with Ursus maritimus

Key Differences

• East Asian river prawn is Least Concern while Polar bear is Vulnerable.

Taxonomic Classification

Rank	East Asian river prawn	Polar bear
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Arthropoda (Arthropods)	Chordata (Chordates)
Class	Malacostraca (Crustaceans)	Mammalia (Mammals)
Order	Decapoda (Decapoda)	Carnivora (Carnivorans)
Family	Palaemonidae	Ursidae (Bears)
Genus	Macrobrachium	Ursus (Bears)
Species	Macrobrachium nipponense	Ursus maritimus

Evolutionary Relationship

East Asian river prawn and Polar bear share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

East Asian river prawn

LC — Least Concern

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	East Asian river prawn	Polar bear
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

East Asian river prawn

Habitat

Found across multiple habitat types including temperate coniferous forests, montane grasslands and shrublands, and deserts and xeric shrublands within the Palearctic biogeographic realm.

Range

Widely distributed across Asia (5 countries), Europe (4 countries), and North America (United States).

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.

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.