blue whale vs Leatherback Sea Turtle

Balaenoptera musculus compared with Dermochelys coriacea

Key Differences

• blue whale is 300.0x heavier than Leatherback Sea Turtle.
• blue whale lives longer (90 years vs 50 years).

Taxonomic Classification

Rank	blue whale	Leatherback Sea Turtle
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (cordados)	Chordata (cordados)
Class	Mammalia (mamíferos)	Reptilia (réptil)
Order	Cetacea (Whales & Dolphins)	Testudines (Tartaruga)
Family	Balaenopteridae (Rorquals)	Cheloniidae (Sea Turtles)
Genus	Balaenoptera (Rorquals)	Chelonia (Green Sea Turtles)
Species	Balaenoptera musculus	Dermochelys coriacea

Evolutionary Relationship

blue whale and Leatherback Sea Turtle share a common ancestor at the Phylum level: Chordata. (cordados)

Conservation Status

blue whale

VU — Vulnerable

Population: ~15.0K

Trend: Increasing ↑

Leatherback Sea Turtle

VU — Vulnerable

Population: ~35.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	blue whale	Leatherback Sea Turtle
Diet	Carnivore	Carnivore
Average Lifespan	90 years	50 years
Average Length	30.0 m	2.0 m
Average Weight	150.0 t	500.0 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.

Leatherback Sea Turtle

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 5 distinct biome types spanning the Australasia and Indomalayan and Neotropic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Costa Rica, Indonesia, Malaysia, and Trinidad and Tobago. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

blue whale

O maior animal que já viveu na Terra, as baleias-azuis podem atingir 33 metros e 200 toneladas — seus corações sozinhos pesam tanto quanto um carro pequeno. Encontradas em todos os oceanos, migram entre áreas de alimentação polares e áreas de reprodução tropicais. Filtradores que consomem até 4 toneladas de krill diariamente. Em perigo, com populações globais estimadas em 10.000–25.000 após a quase extinção causada pela caça baleeira no século XX.

Leatherback Sea Turtle

A tartaruga-de-couro é a maior tartaruga viva e o quarto réptil mais pesado. Ao contrário das demais tartarugas, possui uma carapaça mole e coriácea.