Polar bear vs Prototype quillwort

Ursus maritimus compared with Isoetes prototypus

Key Differences

• Polar bear is Vulnerable while Prototype quillwort is Near Threatened.

Taxonomic Classification

Rank	Polar bear	Prototype quillwort
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Tracheophyta
Class	Mammalia (Mammals)	Lycopodiopsida (Lycopodiopsida)
Order	Carnivora (Carnivorans)	Isoetales (Isoetales)
Family	Ursidae (Bears)	Isoetaceae
Genus	Ursus (Bears)	Isoetes
Species	Ursus maritimus	Isoetes prototypus

Conservation Status

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Prototype quillwort

NT — Near Threatened

Physical Characteristics

Attribute	Polar bear	Prototype quillwort
Diet	Carnivore	—
Average Lifespan	25 years	—
Average Length	2.4 m	—
Average Weight	450.0 kg	—

Habitat & Geographic Range

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.

Prototype quillwort

Habitat

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

Range

Found in Canada. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Polar bear

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.