common bottlenose dolphin vs Leatherback Sea Turtle

Tursiops truncatus compared with Dermochelys coriacea

Key Differences

• common bottlenose dolphin is Least Concern while Leatherback Sea Turtle is Vulnerable.
• Leatherback Sea Turtle is 1.7x heavier than common bottlenose dolphin.
• Leatherback Sea Turtle lives longer (50 years vs 45 years).

Taxonomic Classification

Rank	common bottlenose dolphin	Leatherback Sea Turtle
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class	Mammalia (哺乳類)	Reptilia (爬虫類)
Order	Cetacea (Whales & Dolphins)	Testudines (カメ)
Family	Delphinidae (Oceanic Dolphins)	Cheloniidae (Sea Turtles)
Genus	Tursiops (Bottlenose Dolphins)	Chelonia (Green Sea Turtles)
Species	Tursiops truncatus	Dermochelys coriacea

Evolutionary Relationship

common bottlenose dolphin and Leatherback Sea Turtle share a common ancestor at the Phylum level: Chordata. (脊索動物)

Conservation Status

common bottlenose dolphin

LC — Least Concern

Population: ~600.0K

Trend: Stable →

Leatherback Sea Turtle

VU — Vulnerable

Population: ~35.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	common bottlenose dolphin	Leatherback Sea Turtle
Diet	Carnivore	Carnivore
Average Lifespan	45 years	50 years
Average Length	3.0 m	2.0 m
Average Weight	300.0 kg	500.0 kg

Habitat & Geographic Range

common bottlenose dolphin

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 12 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (Taiwan), Europe (6 countries), and South America (Colombia, Ecuador, Venezuela).

Leatherback 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 5 distinct biome types spanning the Australasia and Indomalayan and Neotropic realms. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Costa Rica, Indonesia, Malaysia, and Trinidad and Tobago. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

common bottlenose dolphin

最も研究され、最も知られているイルカ種であるバンドウイルカは、沿岸の浅瀬から外洋まで世界中の温暖な海域と温帯海域に生息します。体に対して大きな脳を持つ高度に知性的なこの種は、自己認識、複雑なコミュニケーション、社会的学習を示します。流動的な分裂融合社会で生活し、魚を追い込むために協力します。海洋生態系の健全性の重要な指標種です。

Leatherback Sea Turtle

オサガメは現存する最大のカメであり、爬虫類の中で4番目に重い種です。他のカメとは異なり、硬い甲羅ではなく柔らかく革のような皮膚に覆われています。