Green Sea Turtle vs コブハクチョウ

Chelonia mydas compared with Cygnus olor

Key Differences

Green Sea Turtle is Endangered while コブハクチョウ is Near Threatened.
Green Sea Turtle is 16.7x heavier than コブハクチョウ.
Green Sea Turtle lives longer (80 years vs 20 years).

Taxonomic Classification

Rank	Green Sea Turtle	コブハクチョウ
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class	Reptilia (爬虫類)	Aves (鳥類)
Order	Testudines (カメ)	Anseriformes (カモ目)
Family	Cheloniidae (Sea Turtles)	Anatidae
Genus	Chelonia (Green Sea Turtles)	Cygnus
Species	Chelonia mydas	Cygnus olor

Evolutionary Relationship

Green Sea Turtle and コブハクチョウ share a common ancestor at the Phylum level: Chordata. (脊索動物)

表示 Phylum: Chordata

Conservation Status

Green Sea Turtle

EN — Endangered

Population: ~85.0K

Trend: Decreasing ↓

コブハクチョウ

NT — Near Threatened

Population: ~600.0K

Trend: Increasing ↑

Physical Characteristics

Attribute	Green Sea Turtle	コブハクチョウ
Diet	Herbivore	Herbivore
Average Lifespan	80 years	20 years
Average Length	1.2 m	1.5 m
Average Weight	200.0 kg	12.0 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.

コブハクチョウ

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, tundra, and tropical and subtropical moist broadleaf forests, among 8 distinct biome types.

Range

Widely distributed across Africa (South Africa), Asia (4 countries), Europe (24 countries), North America (Canada, Dominican Republic, United States), Oceania and the Pacific (New Zealand), and South America (Colombia, Peru). Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

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。

コブハクチョウ

世界で最もよく見られる白鳥であり最大の飛行鳥の一つで、コブハクチョウ（Cygnus olor）は最大 15 kg に達し、ヨーロッパとアジア全域の湖、川、沿岸湾に生息し、北アメリカとオーストラリアにも広く移入個体群があります。名前に反して、コブハクチョウはシューという音、うなり声、翅の風切り音など様々な音を出します。雄は縄張りを激しく防衛し、強力な翅の一撃で人間を傷つけたり犬を溺死させたりする能力があります。