FWIW people swim every day in Sydney harbour - some naked - although some parts are polluted and there are sharks, one of whom took a chunk out of a navy diver.

FWIW people swim every day in Sydney harbour - some naked - although some parts are polluted and there are sharks, one of whom took a chunk out of a navy diver. https://www.independent.co.uk/news/world/australasia/bull-shark-attack-sydney-survivor-b2140197.html https://www.independent.co.uk/news/world/australasia/bull-sh...