Here's a breakdown:
* Smaller dolphins: (like the common dolphin) typically live around 25 years in the wild.
* Larger dolphins: (like the bottlenose dolphin) can live up to 50 years, with some individuals reaching even older ages.
Factors influencing lifespan include:
* Species: As mentioned, some species are naturally longer-lived than others.
* Habitat: A dolphin's environment, including food availability and predators, can significantly impact its longevity.
* Health: Dolphins susceptible to diseases or injuries may have shorter lifespans.
* Human impacts: Pollution, fishing gear entanglement, and habitat destruction can also negatively affect dolphin longevity.