Alpine Bladder-fern vs Leatherback Sea Turtle

Cystopteris alpina compared with Dermochelys coriacea

Key Differences

Alpine Bladder-fern is Near Threatened while Leatherback Sea Turtle is Vulnerable.

Taxonomic Classification

Rank	Alpine Bladder-fern	Leatherback Sea Turtle
Kingdom	Plantae (พืช)	Animalia (สัตว์)
Phylum	Tracheophyta	Chordata (สัตว์มีแกนสันหลัง)
Class	Polypodiopsida (Polypodiopsida)	Reptilia (สัตว์เลื้อยคลาน)
Order	Polypodiales (Polypodiales)	Testudines (เต่า)
Family	Cystopteridaceae	Cheloniidae (Sea Turtles)
Genus	Cystopteris	Chelonia (Green Sea Turtles)
Species	Cystopteris alpina	Dermochelys coriacea

Conservation Status

Alpine Bladder-fern

NT — Near Threatened

Leatherback Sea Turtle

VU — Vulnerable

Population: ~35.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Alpine Bladder-fern	Leatherback Sea Turtle
Diet	—	Carnivore
Average Lifespan	—	50 years
Average Length	—	2.0 m
Average Weight	—	500.0 kg

Habitat & Geographic Range

Alpine Bladder-fern

Habitat

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

Range

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

Leatherback Sea Turtle

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 5 distinct biome types spanning the Australasia and Indomalayan and Neotropic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Costa Rica, Indonesia, Malaysia, and Trinidad and Tobago. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Alpine Bladder-fern

The Alpine Bladder-fern (Cystopteris alpina) is a species in the genus Cystopteris. It is currently classified as Near Threatened on the IUCN Red List. Typically found in moist, shaded forest floors and tropical canopies. Distributed across Norway and Sweden. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.