Auckland Islands Merganser vs Green Sea Turtle

Mergus australis compared with Chelonia mydas

Key Differences

• Auckland Islands Merganser is Extinct while Green Sea Turtle is Endangered.

Taxonomic Classification

Rank	Auckland Islands Merganser	Green Sea Turtle
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Aves (Birds)	Reptilia (Reptiles)
Order	Anseriformes (Anseriformes)	Testudines (Turtles & Tortoises)
Family	Anatidae	Cheloniidae (Sea Turtles)
Genus	Mergus	Chelonia (Green Sea Turtles)
Species	Mergus australis	Chelonia mydas

Evolutionary Relationship

Auckland Islands Merganser and Green Sea Turtle share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Auckland Islands Merganser

EX — Extinct

Green Sea Turtle

EN — Endangered

Population: ~85.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Auckland Islands Merganser	Green Sea Turtle
Diet	—	Herbivore
Average Lifespan	—	80 years
Average Length	—	1.2 m
Average Weight	—	200.0 kg

Habitat & Geographic Range

Auckland Islands Merganser

Habitat

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

Range

Found in Norway.

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.

Auckland Islands Merganser

The Auckland Islands Merganser (Mergus australis) is a species in the genus Mergus. It is currently classified as Extinct on the IUCN Red List. Typically found in various aerial, terrestrial, and aquatic environments.

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.