For many, dedicating a lifetime to protecting and understanding the underwater world – a world that they may never see except on television screens and picture postcards – may appear ridiculous, if not radical. But for Dr Sylvia Earle, and many like her, it is everything. An oceanographer who has constantly pushed the boundaries of ocean exploration – from living underwater for two weeks, to walking untethered over 300 metres deep on the ocean floor – Dr Earle stands as a timeless luminary for divers worldwide.
