Irrawaddy dolphin vs Silvery Arches

Orcaella brevirostris compared with Polia hepatica

Key Differences

• Irrawaddy dolphin is Endangered while Silvery Arches is Least Concern.

Taxonomic Classification

Rank	Irrawaddy dolphin	Silvery Arches
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Mammalia (Mammals)	Insecta (Insects)
Order	Cetacea (Whales & Dolphins)	Lepidoptera (Butterflies & Moths)
Family	Delphinidae (Oceanic Dolphins)	Noctuidae
Genus	Orcaella	Polia
Species	Orcaella brevirostris	Polia hepatica

Evolutionary Relationship

Irrawaddy dolphin and Silvery Arches share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Irrawaddy dolphin

EN — Endangered

Silvery Arches

LC — Least Concern

Physical Characteristics

Attribute	Irrawaddy dolphin	Silvery Arches
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Irrawaddy dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Silvery Arches

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.