Lesser Rocktripe vs Polar bear

Umbilicaria muhlenbergii compared with Ursus maritimus

Key Differences

• Lesser Rocktripe is Not Evaluated while Polar bear is Vulnerable.

Taxonomic Classification

Rank	Lesser Rocktripe	Polar bear
Kingdom	Fungi (فطر)	Animalia (حيوانات)
Phylum	Ascomycota (فطريات زقية)	Chordata (حبليات)
Class	Lecanoromycetes (لقنورانية)	Mammalia (ثدييات)
Order	Umbilicariales (Umbilicariales)	Carnivora (لواحم)
Family	Umbilicariaceae	Ursidae (Bears)
Genus	Umbilicaria	Ursus (Bears)
Species	Umbilicaria muhlenbergii	Ursus maritimus

Conservation Status

Lesser Rocktripe

NE — Not Evaluated

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

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

Habitat & Geographic Range

Lesser Rocktripe

Habitat

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

Range

Found in United States.

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.

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.