Eisbär vs Yuen Chak Thick Crab

Ursus maritimus compared with Geothelphusa ancylophallus

Key Differences

• Eisbär is Vulnerable while Yuen Chak Thick Crab is Least Concern.

Taxonomic Classification

Rank	Eisbär	Yuen Chak Thick Crab
Kingdom same	Animalia (Tier)	Animalia (Tier)
Phylum	Chordata (Chordatiere)	Arthropoda (Gliederfüßer)
Class	Mammalia (Säugetiere)	Malacostraca (Höhere Krebse)
Order	Carnivora (Raubtiere)	Decapoda (Zehnfußkrebse)
Family	Ursidae (Bears)	Potamidae
Genus	Ursus (Bears)	Geothelphusa
Species	Ursus maritimus	Geothelphusa ancylophallus

Evolutionary Relationship

Eisbär and Yuen Chak Thick Crab share a common ancestor at the Kingdom level: Animalia. (Tier)

Conservation Status

Eisbär

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Yuen Chak Thick Crab

LC — Least Concern

Physical Characteristics

Attribute	Eisbär	Yuen Chak Thick Crab
Diet	Carnivore	—
Average Lifespan	25 years	—
Average Length	2.4 m	—
Average Weight	450.0 kg	—

Habitat & Geographic Range

Eisbär

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.

Yuen Chak Thick Crab

Habitat

Typically found in marine, freshwater, and terrestrial environments.

Range

Found in Taiwan.

Eisbär

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.