[00:00.01]The name is familiar, [00:01.83]but 230 years after Captain Cook's epic voyages, [00:06.00]this vast ocean remains little known. [00:18.84]In the endless blue,isolated islands harbour life that's rarely seen. [00:31.90]And these are some of the most pristine waters of any ocean. [00:43.63]The turquoise seas and picture-postcard islands look like heaven on earth. [00:52.64]But all is not what it seems.