Bladder Fern vs Leatherback Sea Turtle

Cystopteris fragilis compared with Dermochelys coriacea

Key Differences

Bladder Fern is Not Evaluated while Leatherback Sea Turtle is Vulnerable.

Taxonomic Classification

Rank	Bladder Fern	Leatherback Sea Turtle
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Tracheophyta	Chordata (Chordates)
Class	Polypodiopsida (Polypodiopsida)	Reptilia (Reptiles)
Order	Polypodiales (Polypodiales)	Testudines (Turtles & Tortoises)
Family	Cystopteridaceae	Cheloniidae (Sea Turtles)
Genus	Cystopteris	Chelonia (Green Sea Turtles)
Species	Cystopteris fragilis	Dermochelys coriacea

Conservation Status

Bladder Fern

NE — Not Evaluated

Leatherback Sea Turtle

VU — Vulnerable

Population: ~35.0K

Trend: Decreasing ↓

Physical Characteristics

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

Habitat & Geographic Range

Bladder Fern

Habitat

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

Range

Widely distributed across Asia (Taiwan), Europe (6 countries), North America (Canada, United States), and South America (Colombia).

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.