Polar bear vs Sardinian Quillwort

Ursus maritimus compared with Isoetes tiguliana

Key Differences

• Polar bear is Vulnerable while Sardinian Quillwort is Least Concern.

Taxonomic Classification

Rank	Polar bear	Sardinian Quillwort
Kingdom	Animalia (สัตว์)	Plantae (พืช)
Phylum	Chordata (สัตว์มีแกนสันหลัง)	Tracheophyta
Class	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)	Lycopodiopsida (Lycopodiopsida)
Order	Carnivora (สัตว์กินเนื้อ)	Isoetales (Isoetales)
Family	Ursidae (Bears)	Isoetaceae
Genus	Ursus (Bears)	Isoetes
Species	Ursus maritimus	Isoetes tiguliana

Conservation Status

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Sardinian Quillwort

LC — Least Concern

Physical Characteristics

Attribute	Polar bear	Sardinian 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.

Sardinian Quillwort

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.