common bottlenose dolphin vs Green Sea Turtle

Tursiops truncatus compared with Chelonia mydas

Key Differences

• common bottlenose dolphin is Least Concern while Green Sea Turtle is Endangered.
• common bottlenose dolphin is carnivore while Green Sea Turtle is herbivore.
• Green Sea Turtle lives longer (80 years vs 45 years).

Taxonomic Classification

Rank	common bottlenose dolphin	Green Sea Turtle
Kingdom same	Animalia (สัตว์)	Animalia (สัตว์)
Phylum same	Chordata (สัตว์มีแกนสันหลัง)	Chordata (สัตว์มีแกนสันหลัง)
Class	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)	Reptilia (สัตว์เลื้อยคลาน)
Order	Cetacea (Whales & Dolphins)	Testudines (เต่า)
Family	Delphinidae (Oceanic Dolphins)	Cheloniidae (Sea Turtles)
Genus	Tursiops (Bottlenose Dolphins)	Chelonia (Green Sea Turtles)
Species	Tursiops truncatus	Chelonia mydas

Evolutionary Relationship

common bottlenose dolphin and Green Sea Turtle share a common ancestor at the Phylum level: Chordata. (สัตว์มีแกนสันหลัง)

Conservation Status

common bottlenose dolphin

LC — Least Concern

Population: ~600.0K

Trend: Stable →

Green Sea Turtle

EN — Endangered

Population: ~85.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	common bottlenose dolphin	Green Sea Turtle
Diet	Carnivore	Herbivore
Average Lifespan	45 years	80 years
Average Length	3.0 m	1.2 m
Average Weight	300.0 kg	200.0 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).

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.

common bottlenose dolphin

The most studied and recognized dolphin species, bottlenose dolphins inhabit warm and temperate oceans worldwide, from coastal shallows to the open sea. Highly intelligent with large brains relative to body size, they demonstrate self-recognition, complex communication, and social learning. They live in fluid fission-fusion societies and cooperate to herd fish. A keystone indicator species for marine ecosystem health.

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.