Black-scale Fern vs Buckelwal

Diplazium filamentosum compared with Megaptera novaeangliae

Key Differences

Black-scale Fern is Least Concern while Buckelwal is Vulnerable.

Taxonomic Classification

Rank	Black-scale Fern	Buckelwal
Kingdom	Plantae (نباتات)	Animalia (حيوانات)
Phylum	Tracheophyta	Chordata (حبليات)
Class	Polypodiopsida (سراخس رقيقة المباغ)	Mammalia (ثدييات)
Order	Polypodiales (سرخسيات)	Cetacea (Whales & Dolphins)
Family	Athyriaceae	Balaenopteridae (Rorquals)
Genus	Diplazium	Megaptera (Humpback Whales)
Species	Diplazium filamentosum	Megaptera novaeangliae

Conservation Status

Black-scale Fern

LC — Least Concern

Buckelwal

VU — Vulnerable

Population: ~80.0K

Trend: Increasing ↑

Physical Characteristics

Attribute	Black-scale Fern	Buckelwal
Diet	—	Carnivore
Average Lifespan	—	50 years
Average Length	—	15.0 m
Average Weight	—	30.0 t

Habitat & Geographic Range

Black-scale Fern

Habitat

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

Buckelwal

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 11 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (Taiwan), Europe (5 countries), and South America (Colombia, Ecuador, Venezuela). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Black-scale Fern

The Black-scale Fern (Diplazium filamentosum) is a species in the genus Diplazium. It is currently classified as Least Concern on the IUCN Red List. Typically found in moist, shaded forest floors and tropical canopies.

Buckelwal

Among the most acrobatic of the great whales, humpback whales are renowned for their complex, haunting songs sung by males during breeding season — some lasting hours and evolving over time. Reaching 16 meters and 30 tonnes, they undertake the longest migrations of any mammal. Found in all oceans, humpbacks feed on krill and small fish using cooperative bubble-net feeding. Populations have largely recovered from historic whaling.