Green Sea Turtle vs Mourning Cloak

Chelonia mydas compared with Nymphalis antiopa

Key Differences

• Green Sea Turtle is Endangered while Mourning Cloak is Critically Endangered.

Taxonomic Classification

Rank	Green Sea Turtle	Mourning Cloak
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Reptilia (Reptiles)	Insecta (Insects)
Order	Testudines (Turtles & Tortoises)	Lepidoptera (Butterflies & Moths)
Family	Cheloniidae (Sea Turtles)	Nymphalidae (Brush-footed Butterflies)
Genus	Chelonia (Green Sea Turtles)	Nymphalis
Species	Chelonia mydas	Nymphalis antiopa

Evolutionary Relationship

Green Sea Turtle and Mourning Cloak share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Green Sea Turtle

EN — Endangered

Population: ~85.0K

Trend: Decreasing ↓

Mourning Cloak

CR — Critically Endangered

Physical Characteristics

Attribute	Green Sea Turtle	Mourning Cloak
Diet	Herbivore	—
Average Lifespan	80 years	—
Average Length	1.2 m	—
Average Weight	200.0 kg	—

Habitat & Geographic 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.

Mourning Cloak

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and boreal forests and taiga, among 9 distinct biome types within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found across Europe (39 countries) and North America (Canada, United States). Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

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.

Mourning Cloak

Mourning Cloak (Nymphalis antiopa) is classified as Critically Endangered (CR) on the IUCN Red List. Facing an extremely high risk of extinction in the wild due to severe population decline and habitat loss.