clear glass snail vs Polar bear

Oxychilus clarus compared with Ursus maritimus

Key Differences

• clear glass snail is Near Threatened while Polar bear is Vulnerable.

Taxonomic Classification

Rank	clear glass snail	Polar bear
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Gastropoda (Gastropoda)	Mammalia (Mammals)
Order	Stylommatophora (Stylommatophora)	Carnivora (Carnivorans)
Family	Oxychilidae	Ursidae (Bears)
Genus	Oxychilus	Ursus (Bears)
Species	Oxychilus clarus	Ursus maritimus

Evolutionary Relationship

clear glass snail and Polar bear share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

clear glass snail

NT — Near Threatened

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	clear glass snail	Polar bear
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

clear glass snail

Habitat

Typically found in terrestrial and aquatic habitats including forests and freshwater.

Range

Distributed across France and Italy. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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.

clear glass snail

Clear Glass Snail 2 refers to a second species sharing the common name 'clear glass snail,' likely a distinct taxon within the families Vitrinidae or Gastrodontidae that shares the characteristic translucent, thin-walled shell morphology. Translucent-shelled land snails in these families are distributed across temperate zones of the Northern Hemisphere, with centers of diversity in Europe and North America. Many species in these families are restricted to specific microhabitats characterized by stable humidity and abundant organic matter, such as old deciduous woodland, valley mires, and calcareous grassland with a dense ground flora. These snails graze on the surface film of algae, fungi, and bacteria on dead wood and leaf litter, contributing to nutrient cycling in the leaf-litter layer. The glassy or semi-transparent shell is a shared evolutionary feature across multiple lineages, reflecting convergent adaptation to moist, shaded environments where predation pressure may differ from open habitats. Many glass snails are poorly documented in terms of population size and trends. Conservation concerns for thin-shelled snails typically center on habitat destruction, desiccation from climate change, and acidification of soils that reduce the calcium carbonate availability necessary for shell formation.

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.