Irrawaddy dolphin vs Scoophead

Orcaella brevirostris compared with Sphyrna media

Key Differences

• Irrawaddy dolphin is Endangered while Scoophead is Critically Endangered.

Taxonomic Classification

Rank	Irrawaddy dolphin	Scoophead
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Chondrichthyes (Cartilaginous Fish)
Order	Cetacea (Whales & Dolphins)	Carcharhiniformes (Ground Sharks)
Family	Delphinidae (Oceanic Dolphins)	Sphyrnidae (Hammerhead Sharks)
Genus	Orcaella	Sphyrna (Hammerhead Sharks)
Species	Orcaella brevirostris	Sphyrna media

Evolutionary Relationship

Irrawaddy dolphin and Scoophead share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Irrawaddy dolphin

EN — Endangered

Scoophead

CR — Critically Endangered

Physical Characteristics

Attribute	Irrawaddy dolphin	Scoophead
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Irrawaddy dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Scoophead

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and flooded grasslands and savannas, among 5 distinct biome types within the Neotropic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

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