Irrawaddy dolphin vs Saltwater Crocodile

Orcaella brevirostris compared with Crocodylus porosus

Key Differences

• Irrawaddy dolphin is Endangered while Saltwater Crocodile is Least Concern.

Taxonomic Classification

Rank	Irrawaddy dolphin	Saltwater Crocodile
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Reptilia (Reptiles)
Order	Cetacea (Whales & Dolphins)	Crocodylia (Crocodilians)
Family	Delphinidae (Oceanic Dolphins)	Crocodylidae (Crocodiles)
Genus	Orcaella	Crocodylus (True Crocodiles)
Species	Orcaella brevirostris	Crocodylus porosus

Evolutionary Relationship

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

Conservation Status

Irrawaddy dolphin

EN — Endangered

Saltwater Crocodile

LC — Least Concern

Population: ~300.0K

Trend: Stable →

Physical Characteristics

Attribute	Irrawaddy dolphin	Saltwater Crocodile
Diet	—	Carnivore
Average Lifespan	—	70 years
Average Length	—	6.0 m
Average Weight	—	1.0 t

Habitat & Geographic Range

Irrawaddy dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Saltwater Crocodile

Habitat

Typically found in diverse ecosystems where prey species are available.

Range

Distributed across Australia, India, Indonesia, Malaysia, and Philippines.

Saltwater Crocodile

The saltwater crocodile is the largest living reptile, found from eastern India to northern Australia.