Auckland teen Libby Christophers is on a mission to save an at-risk dolphin.
She may be only 15 but she has learned more about the environment than most adults.
Libby is the latest winner of ASB's Good As Gold promotion, which will pay for her and mum Eve's flights to San Francisco in October to pick up her International Young Eco-Hero Award.
It was won through the environmental organisation Action for Nature and Libby is the only Kiwi - with two Australians - to win the award this year.