Much of this remote, blue wilderness is a marine desert. Many animals that live in the ocean must go to extraordinary lengths to survive. But the South Pacific is not all desert. New Zealand’s super-rich coast supports huge pods of acrobatic dolphins, its coral reefs are some of the most diverse on Earth, and there are few places richer in wildlife than the quirky Galapagos Islands. Using the greatest shipwreck story of all time – an event that inspired Moby Dick – the huge challenges of survival in this seemingly endless blue ocean are revealed.