black ribbon worm vs Polar bear

Cerebratulus marginatus compared with Ursus maritimus

Key Differences

• black ribbon worm is Not Evaluated while Polar bear is Vulnerable.

Taxonomic Classification

Rank	black ribbon worm	Polar bear
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Nemertea (Nemertea)	Chordata (cordados)
Class	Pilidiophora (Pilidiophora)	Mammalia (mamíferos)
Order	Heteronemertea (Heteronemertea)	Carnivora (carnívoros)
Family	Lineidae	Ursidae (Bears)
Genus	Cerebratulus	Ursus (Bears)
Species	Cerebratulus marginatus	Ursus maritimus

Evolutionary Relationship

black ribbon worm and Polar bear share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

black ribbon worm

NE — Not Evaluated

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	black ribbon worm	Polar bear
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

black ribbon worm

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, and Sweden.

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.

black ribbon worm

The Black ribbon worm (Cerebratulus marginatus) is a species in the genus Cerebratulus. Native to Europe, inhabiting ecosystems characteristic of the region.

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.

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway