Arnoldi's Woad vs Buckelwal

Isatis arnoldiana compared with Megaptera novaeangliae

Key Differences

Arnoldi's Woad is Data Deficient while Buckelwal is Vulnerable.

Taxonomic Classification

Rank	Arnoldi's Woad	Buckelwal
Kingdom	Plantae (Plants)	Animalia (Animals)
Phylum	Magnoliophyta (Flowering Plants)	Chordata (Chordates)
Class	Magnoliopsida (Dicots)	Mammalia (Mammals)
Order	Brassicales (Brassicales)	Cetacea (Whales & Dolphins)
Family	Brassicaceae	Balaenopteridae (Rorquals)
Genus	Isatis	Megaptera (Humpback Whales)
Species	Isatis arnoldiana	Megaptera novaeangliae

Conservation Status

Arnoldi's Woad

DD — Data Deficient

Buckelwal

VU — Vulnerable

Population: ~80.0K

Trend: Increasing ↑

Physical Characteristics

Attribute	Arnoldi's Woad	Buckelwal
Diet	—	Carnivore
Average Lifespan	—	50 years
Average Length	—	15.0 m
Average Weight	—	30.0 t

Habitat & Geographic Range

Arnoldi's Woad

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

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.

Arnoldi's Woad

The Arnoldi's Woad, Isatis arnoldiana, is a species. Its conservation status is listed as Data Deficient, meaning insufficient information exists to assess its risk of extinction. Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

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.