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 (Animals)	Animalia (Animals)
Phylum same	Chordata (cordados)	Chordata (cordados)
Class	Mammalia (mamíferos)	Reptilia (réptil)
Order	Cetacea (Whales & Dolphins)	Testudines (Tartaruga)
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. (cordados)

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

A espécie de golfinho mais estudada e reconhecida, os roazes habitam oceanos quentes e temperados de todo o mundo, desde águas costeiras rasas até ao mar aberto. Altamente inteligentes com grandes cérebros em relação ao tamanho corporal, demonstram auto-reconhecimento, comunicação complexa e aprendizagem social. Vivem em sociedades fluidas de fissão-fusão e cooperam para arrebanhar peixes. Uma espécie indicadora chave da saúde dos ecossistemas marinhos.

Leatherback Sea Turtle

A tartaruga-de-couro é a maior tartaruga viva e o quarto réptil mais pesado. Ao contrário das demais tartarugas, possui uma carapaça mole e coriácea.