Chinese jumper worm vs Oso Polar

Amynthas gracilis compared with Ursus maritimus

Key Differences

• Chinese jumper worm is Not Evaluated while Oso Polar is Vulnerable.

Taxonomic Classification

Rank	Chinese jumper worm	Oso Polar
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Annelida (Segmented Worms)	Chordata (cordados)
Class	Clitellata (Clitellata)	Mammalia (mamíferos)
Order	Crassiclitellata (Crassiclitellata)	Carnivora (carnívoros)
Family	Megascolecidae	Ursidae (Bears)
Genus	Amynthas	Ursus (Bears)
Species	Amynthas gracilis	Ursus maritimus

Evolutionary Relationship

Chinese jumper worm and Oso Polar share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Chinese jumper worm

NE — Not Evaluated

Oso Polar

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Chinese jumper worm	Oso Polar
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

Chinese jumper worm

Habitat

Native to Africa and Asia and Europe, inhabiting ecosystems characteristic of the region.

Range

Widely distributed across Africa (South Africa), Asia (Singapore, Taiwan), Europe (Denmark, Portugal, Spain), and North America (United States).

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.

Chinese jumper worm

The Chinese Jumper Worm (Amynthas gracilis) is a species in the genus Amynthas. Native to Denmark, Portugal, Singapore, South Africa, and Spain.

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.