When ALISON BALLANCE joined a great white shark tagging expedition at Stewart Island, she was taken aback at just how impressive great white sharks are at close quarters. She was intrigued by the electronic tags that the scientists were using to follow the sharks, excited by what they revealed and determined to share this amazing story. Alison is a zoologist, diver, wildlife film-maker and radio presenter on RNZ National. She is an award-winning writer, whose 29 natural history books include Kakapo: Rescued from the brink of extinction, which won the 2011 Royal Society of New Zealand Science Book Prize. She has also been shortlisted for the New Zealand Post Children's Book Awards for Hoki: The story of a kakapo, and the New Zealand Book Awards for Southern Alps: History and natural history of New Zealand's mountain world.