The short answer: An adult bottlenose dolphin typically weighs about 150 to 650 kg (330 to 1,430 lb), with males generally larger than females.
Bottlenose dolphin weight by type
Weight depends on population, sex, and age. Here are typical ranges.
| Type (example) | Typical weight |
|---|---|
| Newborn calf | About 15 to 30 kg (33 to 66 lb) |
| Coastal adult | About 150 to 300 kg (330 to 660 lb) |
| Offshore adult | About 300 to 500 kg (660 to 1,100 lb) |
| Large male | Up to roughly 650 kg (1,430 lb) |
What affects bottlenose dolphin weight
- Sex. Males are typically larger and heavier than females.
- Population. Offshore dolphins tend to be bigger than coastal ones.
- Region. Colder waters often produce larger-bodied animals.
- Age. Dolphins reach full size over several years.
- Diet. Prey availability shapes overall body condition.
How bottlenose dolphin weight compares
A large bottlenose dolphin can weigh about as much as a grand piano, while smaller coastal individuals are closer to the weight of a large refrigerator.
Frequently asked questions
How much does a bottlenose dolphin weigh on average?
Most adults weigh between roughly 200 and 350 kg, with large offshore males heavier still.
Are male bottlenose dolphins bigger than females?
Yes, males are generally longer and heavier than females of the same population.
How heavy is a baby bottlenose dolphin?
A newborn calf typically weighs about 15 to 30 kg and grows quickly while nursing.
