Coelacanth vs Irrawaddy dolphin

Latimeria chalumnae compared with Orcaella brevirostris

Key Differences

• Coelacanth is Critically Endangered while Irrawaddy dolphin is Endangered.

Taxonomic Classification

Rank	Coelacanth	Irrawaddy dolphin
Kingdom same	Animalia (प्राणी)	Animalia (प्राणी)
Phylum same	Chordata (रज्जुकी)	Chordata (रज्जुकी)
Class	Coelacanthi (Coelacanthi)	Mammalia (स्तनधारी)
Order	Coelacanthiformes (Coelacanthiformes)	Cetacea (Whales & Dolphins)
Family	Latimeriidae	Delphinidae (Oceanic Dolphins)
Genus	Latimeria	Orcaella
Species	Latimeria chalumnae	Orcaella brevirostris

Evolutionary Relationship

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

Conservation Status

Coelacanth

CR — Critically Endangered

Population: ~500

Trend: Decreasing ↓

Irrawaddy dolphin

EN — Endangered

Physical Characteristics

Attribute	Coelacanth	Irrawaddy dolphin
Diet	Carnivore	—
Average Lifespan	100 years	—
Average Length	1.8 m	—
Average Weight	80.0 kg	—

Habitat & Geographic Range

Coelacanth

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 8 distinct biome types spanning the Australasia and Afrotropic and Indomalayan realms. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Comoros, Indonesia, Mozambique, and South Africa. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Irrawaddy dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Coelacanth

A living fossil thought extinct for 65 million years until rediscovered off South Africa in 1938, coelacanths can reach 2 meters and 90 kg. They belong to an ancient lobe-finned lineage more closely related to tetrapods than to ray-finned fish, making them scientifically invaluable for understanding vertebrate evolution. Found in deep rocky reef habitats of the Indian Ocean, they are nocturnal and undergo internal fertilization, giving birth to fully formed live young. Critically Endangered.