Irrawaddy dolphin vs undulate ray

Orcaella brevirostris compared with Raja undulata

Taxonomic Classification

Rank	Irrawaddy dolphin	undulate ray
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)	Elasmobranchii
Order	Cetacea (Whales & Dolphins)	Rajiformes (ガンギエイ目)
Family	Delphinidae (Oceanic Dolphins)	Rajidae
Genus	Orcaella	Raja
Species	Orcaella brevirostris	Raja undulata

Evolutionary Relationship

Irrawaddy dolphin and undulate ray share a common ancestor at the Phylum level: Chordata. (脊索動物)

Conservation Status

Irrawaddy dolphin

EN — Endangered

undulate ray

EN — Endangered

Physical Characteristics

Attribute	Irrawaddy dolphin	undulate ray
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Irrawaddy dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

undulate ray

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

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