Irrawaddy Dolphin vs Orca (Killer Whale)
How does the Irrawaddy Dolphin compare to the Orca (Killer Whale)? They are both members of the Delphinidae family. Below we put their classification, habitat, diet, size, and conservation status side by side — and settle who would win in a fight.


Side-by-side comparison
- Scientific name
- Orcaella brevirostris
- Orcinus orca
- Classification
- Mammal
- Mammal
- Family
- Delphinidae
- Delphinidae
- Habitat
- Freshwater rivers, coastal waters, and estuaries
- Ocean
- Diet
- Carnivore
- Carnivore
- Conservation status
- Endangered
- Data Deficient (IUCN); some regional populations Endangered
- Lifespan
- 30–40 years
- 30–50 years (males), 50–90 years (females)
- Weight
- 90–200 kg
- 3,000–6,000 kg
Irrawaddy Dolphin vs Orca (Killer Whale): who would win?

Irrawaddy Dolphin
90–200 kg

Orca (Killer Whale)
3,000–6,000 kg
Orca (Killer Whale) wins high confidence
Orca (Killer Whale) is substantially heavier (3,000–6,000 kg vs 90–200 kg). In a physical confrontation that size and power advantage is usually decisive. In the wild these two rarely (if ever) meet — this is a what-if based on the size and diet we have on record, not a prediction.
Similarities
- Both are mammals.
- Both belong to the Delphinidae family.
- Both have a carnivore diet.
Differences
- Habitat: Freshwater rivers, coastal waters, and estuaries vs Ocean.
- Conservation: Endangered vs Data Deficient (IUCN); some regional populations Endangered.
- Weight: 90–200 kg vs 3,000–6,000 kg.
Irrawaddy Dolphin vs Orca (Killer Whale): FAQ
Who would win in a fight, a Irrawaddy Dolphin or a Orca (Killer Whale)?
Orca (Killer Whale) wins. Orca (Killer Whale) is substantially heavier (3,000–6,000 kg vs 90–200 kg). In a physical confrontation that size and power advantage is usually decisive. In the wild these two rarely (if ever) meet — this is a what-if based on the size and diet we have on record, not a prediction.
What is the difference between a Irrawaddy Dolphin and a Orca (Killer Whale)?
Irrawaddy Dolphin and Orca (Killer Whale) differ in several ways — habitat: freshwater rivers, coastal waters, and estuaries vs ocean. conservation: endangered vs data deficient (iucn); some regional populations endangered. weight: 90–200 kg vs 3,000–6,000 kg.
Do Irrawaddy Dolphin and Orca (Killer Whale) live in the same habitat?
No — Irrawaddy Dolphin lives in freshwater rivers, coastal waters, and estuaries, while Orca (Killer Whale) is found in ocean.
What do Irrawaddy Dolphin and Orca (Killer Whale) eat?
Both Irrawaddy Dolphin and Orca (Killer Whale) have a carnivore diet.
Which is more endangered, the Irrawaddy Dolphin or the Orca (Killer Whale)?
Irrawaddy Dolphin is listed as Endangered, while Orca (Killer Whale) is listed as Data Deficient (IUCN); some regional populations Endangered.
How big are Irrawaddy Dolphin and Orca (Killer Whale)?
Irrawaddy Dolphin weighs around 90–200 kg, while Orca (Killer Whale) weighs around 3,000–6,000 kg.

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Irrawaddy Dolphin

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Orca (Killer Whale)





