fen raft spider vs ours blanc

Dolomedes plantarius compared with Ursus maritimus

Key Differences

• fen raft spider is Data Deficient while ours blanc is Vulnerable.

Taxonomic Classification

Rank	fen raft spider	ours blanc
Kingdom same	Animalia (animal)	Animalia (animal)
Phylum	Arthropoda (arthropodes)	Chordata (Chordates)
Class	Arachnida (Arachnids)	Mammalia (mammifères)
Order	Araneae (araignée)	Carnivora (carnivores)
Family	Pisauridae	Ursidae (Bears)
Genus	Dolomedes	Ursus (Bears)
Species	Dolomedes plantarius	Ursus maritimus

Evolutionary Relationship

fen raft spider and ours blanc share a common ancestor at the Kingdom level: Animalia. (animal)

Conservation Status

fen raft spider

DD — Data Deficient

ours blanc

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	fen raft spider	ours blanc
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.

ours blanc

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.

ours blanc

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