clear glass snail vs Polar bear

Aegopinella pura compared with Ursus maritimus

Taxonomic Classification

Rank	clear glass snail	Polar bear
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum	Mollusca (软体动物门)	Chordata (脊索动物门)
Class	Gastropoda (腹足纲)	Mammalia (哺乳動物)
Order	Stylommatophora (柄眼目)	Carnivora (食肉目)
Family	Gastrodontidae	Ursidae (Bears)
Genus	Aegopinella	Ursus (Bears)
Species	Aegopinella pura	Ursus maritimus

Evolutionary Relationship

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

Conservation Status

clear glass snail

VU — Vulnerable

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

Inhabits temperate broadleaf and mixed forests and Mediterranean forests and woodlands within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found across Europe (6 countries) and North America (United States). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its 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.

clear glass snail

The Clear Glass Snail is a common name applied to small, translucent land snails, typically in the family Vitrinidae or Zonitidae, characterized by their thin, glassy shells through which the soft body of the animal is often visible. These snails inhabit moist, shaded environments including deciduous woodland, grassland with thick vegetation, and hedgerows across Europe and North America. The thin, transparent shell is often not large enough to completely retract into, leaving the mantle partially exposed, an adaptation that reduces shell weight while maximizing the internal surface area available for gas exchange. Clear glass snails are detritivores and microphages, consuming fungi, algae, decaying plant matter, and occasionally living plant tissue. They are sensitive to desiccation and are most active during wet, cool conditions, retreating under bark, stones, or into leaf litter during dry weather. Several European glass snail species are considered indicators of old, undisturbed woodland habitats with stable microclimatic conditions. Some species in the family Zonitidae have declined due to loss of old woodland, intensive agriculture, and fragmentation of semi-natural habitats. Exact conservation status depends on the specific species intended by the common name.

Polar bear

北极熊是地球上最大的陆地食肉动物，体重可超过700千克，分布于从加拿大到俄罗斯的北极海冰区。是高度特化的海洋哺乳动物，依赖海冰捕猎环斑海豹和髯海豹。是优秀的游泳者，能够横渡广阔的开阔水域。被列为易危种，因气候变化导致北极海冰迅速减少，种群正受到严重威胁。

Shared Countries

Both species can be found in 1 countries:

🇳🇴 Norway