fen raft spider vs Oso Polar

Dolomedes plantarius compared with Ursus maritimus

Key Differences

• fen raft spider is Data Deficient while Oso Polar is Vulnerable.

Taxonomic Classification

Rank	fen raft spider	Oso Polar
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Arthropoda (artrópodos)	Chordata (cordados)
Class	Arachnida (arácnidos)	Mammalia (mamíferos)
Order	Araneae (araña)	Carnivora (carnívoros)
Family	Pisauridae	Ursidae (Bears)
Genus	Dolomedes	Ursus (Bears)
Species	Dolomedes plantarius	Ursus maritimus

Evolutionary Relationship

fen raft spider and Oso Polar share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

fen raft spider

DD — Data Deficient

Oso Polar

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	fen raft spider	Oso Polar
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

fen raft spider

Habitat

Typically found in terrestrial habitats from forests to deserts.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

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.

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.

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway