Green Sea Turtle vs Northern Naiad

Chelonia mydas compared with Najas gracillima

Key Differences

• Green Sea Turtle is Endangered while Northern Naiad is Least Concern.

Taxonomic Classification

Rank	Green Sea Turtle	Northern Naiad
Kingdom	Animalia (สัตว์)	Plantae (พืช)
Phylum	Chordata (สัตว์มีแกนสันหลัง)	Magnoliophyta (Flowering Plants)
Class	Reptilia (สัตว์เลื้อยคลาน)	Liliopsida (Monocots)
Order	Testudines (เต่า)	Alismatales (อันดับขาเขียด)
Family	Cheloniidae (Sea Turtles)	Hydrocharitaceae
Genus	Chelonia (Green Sea Turtles)	Najas
Species	Chelonia mydas	Najas gracillima

Conservation Status

Green Sea Turtle

EN — Endangered

Population: ~85.0K

Trend: Decreasing ↓

Northern Naiad

LC — Least Concern

Physical Characteristics

Attribute	Green Sea Turtle	Northern Naiad
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.

Northern Naiad

Habitat

Typically found in grasslands, wetlands, forests, and cultivated landscapes.

Range

Widely distributed across Asia (Taiwan), Europe (4 countries), and North America (Canada, United States).

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.