On Friday teenage marathon swimmer Maya Merhige swam across Cook Strait.
She made the 22km journey in 14 and a half hours. And as if that doesn't sound tough enough for you, she did it overnight.
It's all part of her quest to complete the world's seven toughest ocean swims and raise money for Cancer Research.
Eddies of water from rivers in Golden and Tasman Bay reach more than 100 kilometres out into greater Cook Strait. Photo: NIWA
