blue whale vs brown bear

Balaenoptera musculus compared with Ursus arctos

Key Differences

• blue whale is Vulnerable while brown bear is Extinct.
• blue whale is carnivore while brown bear is omnivore.
• blue whale is 500.0x heavier than brown bear.
• blue whale lives longer (90 years vs 25 years).

Taxonomic Classification

Rank	blue whale	brown bear
Kingdom same	Animalia (hayvan)	Animalia (hayvan)
Phylum same	Chordata (Kordalılar)	Chordata (Kordalılar)
Class same	Mammalia (memeliler)	Mammalia (memeliler)
Order	Cetacea (Whales & Dolphins)	Carnivora (etçiller)
Family	Balaenopteridae (Rorquals)	Ursidae (Bears)
Genus	Balaenoptera (Rorquals)	Ursus (Bears)
Species	Balaenoptera musculus	Ursus arctos

Evolutionary Relationship

blue whale and brown bear share a common ancestor at the Class level: Mammalia. (memeliler)

Conservation Status

blue whale

VU — Vulnerable

Population: ~15.0K

Trend: Increasing ↑

brown bear

EX — Extinct

Population: ~200.0K

Trend: Stable →

Physical Characteristics

Attribute	blue whale	brown bear
Diet	Carnivore	Omnivore
Average Lifespan	90 years	25 years
Average Length	30.0 m	2.0 m
Average Weight	150.0 t	300.0 kg

Habitat & Geographic Range

blue whale

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.

brown bear

Habitat

Typically found in a wide range of habitat types.

Range

Found across Europe (6 countries).

blue whale

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.

brown bear

The world's most widely distributed bear species, brown bears range from North America and Europe across Russia to Japan, occupying forests, tundra, and alpine meadows. Adults can weigh up to 700 kg in coastal Alaskan populations. Omnivores that consume berries, roots, fish, and carrion, brown bears are a keystone species that distribute nutrients across landscapes. Most populations are stable, though some subspecies are threatened.

Shared Countries

Both species can be found in 2 countries:

🇳🇴 Norway 🇸🇪 Sweden