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 (artrópode)	Chordata (cordados)
Class	Malacostraca (Crustaceans)	Mammalia (mamíferos)
Order	Decapoda (Decapoda)	Carnivora (carnívoros)
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

O maior carnivoro terrestre da Terra, o urso-polar pode ultrapassar 700 kg e e encontrado pelo gelo marinho artico, do Canada ate a Russia. Mamiferos marinhos altamente especializados que dependem do gelo marinho para cacas de focas e focas-barbadas. Excelentes nadadores capazes de percorrer grandes distancias em aguas abertas. Classificado como Vulneravel, com populacoes sob severa pressao devido a rapida perda de gelo marinho artico causada pelas mudancas climaticas.