Blotchy swell shark vs blue whale

Cephaloscyllium umbratile compared with Balaenoptera musculus

Key Differences

• Blotchy swell shark is Near Threatened while blue whale is Vulnerable.

Taxonomic Classification

Rank	Blotchy swell shark	blue whale
Kingdom same	Animalia (สัตว์)	Animalia (สัตว์)
Phylum same	Chordata (สัตว์มีแกนสันหลัง)	Chordata (สัตว์มีแกนสันหลัง)
Class	Chondrichthyes (ปลากระดูกอ่อน)	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)
Order	Carcharhiniformes (อันดับปลาฉลามครีบดำ)	Cetacea (Whales & Dolphins)
Family	Scyliorhinidae	Balaenopteridae (Rorquals)
Genus	Cephaloscyllium	Balaenoptera (Rorquals)
Species	Cephaloscyllium umbratile	Balaenoptera musculus

Evolutionary Relationship

Blotchy swell shark and blue whale share a common ancestor at the Phylum level: Chordata. (สัตว์มีแกนสันหลัง)

Conservation Status

Blotchy swell shark

NT — Near Threatened

blue whale

VU — Vulnerable

Population: ~15.0K

Trend: Increasing ↑

Physical Characteristics

Attribute	Blotchy swell shark	blue whale
Diet	—	Carnivore
Average Lifespan	—	90 years
Average Length	—	30.0 m
Average Weight	—	150.0 t

Habitat & Geographic Range

Blotchy swell shark

Habitat

Typically found in marine environments from coastal waters to deep ocean.

Range

Found in Taiwan. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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.

Blotchy swell shark

The Blotchy swell shark (Cephaloscyllium umbratile) is a species in the genus Cephaloscyllium. It is currently classified as Near Threatened on the IUCN Red List. Typically found in marine environments from coastal waters to deep ocean.

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.

Shared Countries

Both species can be found in 1 countries:

🇹🇼 Taiwan