baleine à bosse vs Green Sea Turtle

Megaptera novaeangliae compared with Chelonia mydas

Key Differences

• baleine à bosse is Vulnerable while Green Sea Turtle is Endangered.
• baleine à bosse is carnivore while Green Sea Turtle is herbivore.
• baleine à bosse is 150.0x heavier than Green Sea Turtle.
• Green Sea Turtle lives longer (80 years vs 50 years).

Taxonomic Classification

Rank	baleine à bosse	Green Sea Turtle
Kingdom same	Animalia (animal)	Animalia (animal)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (mammifères)	Reptilia (Reptiles)
Order	Cetacea (Whales & Dolphins)	Testudines (tortue)
Family	Balaenopteridae (Rorquals)	Cheloniidae (Sea Turtles)
Genus	Megaptera (Humpback Whales)	Chelonia (Green Sea Turtles)
Species	Megaptera novaeangliae	Chelonia mydas

Evolutionary Relationship

baleine à bosse and Green Sea Turtle share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

baleine à bosse

VU — Vulnerable

Population: ~80.0K

Trend: Increasing ↑

Green Sea Turtle

EN — Endangered

Population: ~85.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	baleine à bosse	Green Sea Turtle
Diet	Carnivore	Herbivore
Average Lifespan	50 years	80 years
Average Length	15.0 m	1.2 m
Average Weight	30.0 t	200.0 kg

Habitat & Geographic Range

baleine à bosse

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

Green 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 8 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Australia, Brazil, Costa Rica, Indonesia, and Mexico. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

baleine à bosse

Among the most acrobatic of the great whales, humpback whales are renowned for their complex, haunting songs sung by males during breeding season — some lasting hours and evolving over time. Reaching 16 meters and 30 tonnes, they undertake the longest migrations of any mammal. Found in all oceans, humpbacks feed on krill and small fish using cooperative bubble-net feeding. Populations have largely recovered from historic whaling.

Green Sea Turtle

The green sea turtle is one of the largest sea turtles. They are named for the green color of their cartilage and fat, not their shells.