Indo-Pacific Bottlenose Dolphin vs Sandwich Tern

Tursiops aduncus compared with Thalasseus sandvicensis

Key Differences

• Indo-Pacific Bottlenose Dolphin is Near Threatened while Sandwich Tern is Least Concern.

Taxonomic Classification

Rank	Indo-Pacific Bottlenose Dolphin	Sandwich Tern
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Cetacea (Whales & Dolphins)	Charadriiformes (Charadriiformes)
Family	Delphinidae (Oceanic Dolphins)	Laridae
Genus	Tursiops (Bottlenose Dolphins)	Thalasseus
Species	Tursiops aduncus	Thalasseus sandvicensis

Evolutionary Relationship

Indo-Pacific Bottlenose Dolphin and Sandwich Tern share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Indo-Pacific Bottlenose Dolphin

NT — Near Threatened

Sandwich Tern

LC — Least Concern

Physical Characteristics

Attribute	Indo-Pacific Bottlenose Dolphin	Sandwich Tern
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Indo-Pacific Bottlenose Dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Taiwan. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Sandwich Tern

Habitat

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

Range

Found across Europe (4 countries) and South America (Colombia, Ecuador, Venezuela).

Sandwich Tern

Sandwich Tern (Thalasseus sandvicensis) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.