Black-tailed Gull vs Green Sea Turtle

Larus crassirostris compared with Chelonia mydas

Key Differences

• Black-tailed Gull is Least Concern while Green Sea Turtle is Endangered.

Taxonomic Classification

Rank	Black-tailed Gull	Green Sea Turtle
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Reptilia (Reptiles)
Order	Charadriiformes (Charadriiformes)	Testudines (Turtles & Tortoises)
Family	Laridae	Cheloniidae (Sea Turtles)
Genus	Larus	Chelonia (Green Sea Turtles)
Species	Larus crassirostris	Chelonia mydas

Evolutionary Relationship

Black-tailed Gull and Green Sea Turtle share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Black-tailed Gull

LC — Least Concern

Green Sea Turtle

EN — Endangered

Population: ~85.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Black-tailed Gull	Green Sea Turtle
Diet	—	Herbivore
Average Lifespan	—	80 years
Average Length	—	1.2 m
Average Weight	—	200.0 kg

Habitat & Geographic Range

Black-tailed Gull

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Distributed across Norway, Taiwan, and United States.

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.

Black-tailed Gull

The Black-tailed Gull (Larus crassirostris) is a species in the genus Larus. It is currently classified as Least Concern on the IUCN Red List. Distributed across Norway, Taiwan, and 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.