chestnut worm vs Bely Medved

Lumbricus castaneus compared with Ursus maritimus

Key Differences

• chestnut worm is Not Evaluated while Bely Medved is Vulnerable.

Taxonomic Classification

Rank	chestnut worm	Bely Medved
Kingdom same	Animalia (животные)	Animalia (животные)
Phylum	Annelida (кольчатые черви)	Chordata (хордовые)
Class	Clitellata (поясковые черви)	Mammalia (млекопитающие)
Order	Crassiclitellata (Crassiclitellata)	Carnivora (хищные)
Family	Lumbricidae	Ursidae (Bears)
Genus	Lumbricus	Ursus (Bears)
Species	Lumbricus castaneus	Ursus maritimus

Evolutionary Relationship

chestnut worm and Bely Medved share a common ancestor at the Kingdom level: Animalia. (животные)

Conservation Status

chestnut worm

NE — Not Evaluated

Bely Medved

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	chestnut worm	Bely Medved
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

chestnut worm

Habitat

Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Belgium, Denmark, Norway, Sweden, and United States.

Bely Medved

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.

chestnut worm

The chestnut worm (Lumbricus castaneus) is a species in the genus Lumbricus. Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Bely Medved

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.

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway