Gadwall vs Green Sea Turtle

Mareca strepera compared with Chelonia mydas

Key Differences

• Gadwall is Least Concern while Green Sea Turtle is Endangered.

Taxonomic Classification

Rank	Gadwall	Green Sea Turtle
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class	Aves (鳥類)	Reptilia (爬虫類)
Order	Anseriformes (カモ目)	Testudines (カメ)
Family	Anatidae	Cheloniidae (Sea Turtles)
Genus	Mareca	Chelonia (Green Sea Turtles)
Species	Mareca strepera	Chelonia mydas

Evolutionary Relationship

Gadwall and Green Sea Turtle share a common ancestor at the Phylum level: Chordata. (脊索動物)

Conservation Status

Gadwall

LC — Least Concern

Green Sea Turtle

EN — Endangered

Population: ~85.0K

Trend: Decreasing ↓

Physical Characteristics

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

Habitat & Geographic Range

Gadwall

Habitat

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

Range

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

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.

Gadwall

オカヨシガモ（Mareca strepera）はIUCNレッドリストで軽度懸念（LC）に分類される。分布域全体で広く生息しており、個体群は安定していて、差し迫った保全上の懸念はない。

Green Sea Turtle

アオウミガメは最も大きなウミガメの一つです。甲羅ではなく軟骨と脂肪の緑色に由来して名付けられました。