baleine bleue vs Azuré de l'ajonc

Balaenoptera musculus compared with Plebejus argus

Key Differences

• baleine bleue is Vulnerable while Azuré de l'ajonc is Endangered.

Taxonomic Classification

Rank	baleine bleue	Azuré de l'ajonc
Kingdom same	Animalia (animal)	Animalia (animal)
Phylum	Chordata (Chordates)	Arthropoda (arthropodes)
Class	Mammalia (mammifères)	Insecta (insecte)
Order	Cetacea (Whales & Dolphins)	Lepidoptera (Butterflies & Moths)
Family	Balaenopteridae (Rorquals)	Lycaenidae
Genus	Balaenoptera (Rorquals)	Plebejus
Species	Balaenoptera musculus	Plebejus argus

Evolutionary Relationship

baleine bleue and Azuré de l'ajonc share a common ancestor at the Kingdom level: Animalia. (animal)

Conservation Status

baleine bleue

VU — Vulnerable

Population: ~15.0K

Trend: Increasing ↑

Azuré de l'ajonc

EN — Endangered

Physical Characteristics

Attribute	baleine bleue	Azuré de l'ajonc
Diet	Carnivore	—
Average Lifespan	90 years	—
Average Length	30.0 m	—
Average Weight	150.0 t	—

Habitat & Geographic Range

baleine bleue

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 (4 countries), and South America (Colombia, Ecuador). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Azuré de l'ajonc

Habitat

Inhabits temperate broadleaf and mixed forests and Mediterranean forests and woodlands within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found across Europe (39 countries). Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

baleine bleue

The largest animal ever known to have lived on Earth, blue whales can reach 33 meters and 200 tonnes — their hearts alone weigh as much as a small car. Found in all oceans, they migrate between polar feeding grounds and tropical breeding areas. Filter feeders consuming up to 4 tonnes of krill daily. Endangered, with global populations estimated at 10,000–25,000 after near-extinction from 20th-century whaling.

Azuré de l'ajonc

Silver-Studded Blue (Plebejus argus) is classified as Endangered (EN) on the IUCN Red List. At high risk of extinction in the wild, with significant population decline and ongoing threats to survival.

Shared Countries

Both species can be found in 4 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇵🇹 Portugal 🇸🇪 Sweden