Delta maidenhair fern vs Polar bear

Adiantum raddianum compared with Ursus maritimus

Key Differences

Delta maidenhair fern is Not Evaluated while Polar bear is Vulnerable.

Taxonomic Classification

Rank	Delta maidenhair fern	Polar bear
Kingdom	Plantae (พืช)	Animalia (สัตว์)
Phylum	Tracheophyta	Chordata (สัตว์มีแกนสันหลัง)
Class	Polypodiopsida (Polypodiopsida)	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)
Order	Polypodiales (Polypodiales)	Carnivora (สัตว์กินเนื้อ)
Family	Pteridaceae	Ursidae (Bears)
Genus	Adiantum	Ursus (Bears)
Species	Adiantum raddianum	Ursus maritimus

Conservation Status

Delta maidenhair fern

NE — Not Evaluated

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Delta maidenhair fern	Polar bear
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

Delta maidenhair fern

Habitat

Typically found in moist, shaded forest floors and tropical canopies.

Range

Widely distributed across Africa (5 countries), Asia (Nepal, Sri Lanka, Taiwan), Europe (6 countries), North America (Trinidad and Tobago, United States), Oceania and the Pacific (Kiribati, Papua New Guinea), and South America (Brazil, Colombia).

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.

Delta maidenhair fern

No description available.

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.