blue whale vs Brazilian electric ray

Balaenoptera musculus compared with Narcine brasiliensis

Key Differences

• blue whale is Vulnerable while Brazilian electric ray is Near Threatened.

Taxonomic Classification

Rank	blue whale	Brazilian electric ray
Kingdom same	Animalia (สัตว์)	Animalia (สัตว์)
Phylum same	Chordata (สัตว์มีแกนสันหลัง)	Chordata (สัตว์มีแกนสันหลัง)
Class	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)	Elasmobranchii
Order	Cetacea (Whales & Dolphins)	Torpediniformes (ปลากระเบนไฟฟ้า)
Family	Balaenopteridae (Rorquals)	Narcinidae
Genus	Balaenoptera (Rorquals)	Narcine
Species	Balaenoptera musculus	Narcine brasiliensis

Evolutionary Relationship

blue whale and Brazilian electric ray share a common ancestor at the Phylum level: Chordata. (สัตว์มีแกนสันหลัง)

Conservation Status

blue whale

VU — Vulnerable

Population: ~15.0K

Trend: Increasing ↑

Brazilian electric ray

NT — Near Threatened

Physical Characteristics

Attribute	blue whale	Brazilian electric ray
Diet	Carnivore	—
Average Lifespan	90 years	—
Average Length	30.0 m	—
Average Weight	150.0 t	—

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.

Brazilian electric ray

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.

Brazilian electric ray

The Brazilian electric ray (Narcine brasiliensis) is a species in the genus Narcine. It is currently classified as Near Threatened on the IUCN Red List.