Indian Ocean humpback dolphin vs Polynesian Triller

Sousa plumbea compared with Lalage maculosa

Key Differences

• Indian Ocean humpback dolphin is Endangered while Polynesian Triller is Least Concern.

Taxonomic Classification

Rank	Indian Ocean humpback dolphin	Polynesian Triller
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Aves (Birds)
Order	Cetacea (Whales & Dolphins)	Passeriformes (Songbirds)
Family	Delphinidae (Oceanic Dolphins)	Campephagidae
Genus	Sousa	Lalage
Species	Sousa plumbea	Lalage maculosa

Evolutionary Relationship

Indian Ocean humpback dolphin and Polynesian Triller share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Indian Ocean humpback dolphin

EN — Endangered

Polynesian Triller

LC — Least Concern

Physical Characteristics

Attribute	Indian Ocean humpback dolphin	Polynesian Triller
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Indian Ocean humpback dolphin

Habitat

Inhabits temperate broadleaf and mixed forests and Mediterranean forests and woodlands within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found in Greece. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Polynesian Triller

Habitat

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

Range

Found in Norway.