Green Sea Turtle vs sea thread hydroid

Chelonia mydas compared with Obelia dichotoma

Key Differences

• Green Sea Turtle is Endangered while sea thread hydroid is Not Evaluated.

Taxonomic Classification

Rank	Green Sea Turtle	sea thread hydroid
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Cnidaria (Cnidarians)
Class	Reptilia (Reptiles)	Hydrozoa (Hydrozoa)
Order	Testudines (Turtles & Tortoises)	Leptothecata (Leptothecata)
Family	Cheloniidae (Sea Turtles)	Campanulariidae
Genus	Chelonia (Green Sea Turtles)	Obelia
Species	Chelonia mydas	Obelia dichotoma

Evolutionary Relationship

Green Sea Turtle and sea thread hydroid share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Green Sea Turtle

EN — Endangered

Population: ~85.0K

Trend: Decreasing ↓

sea thread hydroid

NE — Not Evaluated

Physical Characteristics

Attribute	Green Sea Turtle	sea thread hydroid
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.

sea thread hydroid

Habitat

Native to Africa and Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Widely distributed across Africa (South Africa), Europe (5 countries), North America (Canada, Mexico, United States), Oceania and the Pacific (Australia), and South America (Argentina, Chile).

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.

Shared Countries

Both species can be found in 2 countries:

🇦🇺 Australia 🇲🇽 Mexico