IMAX director Greg MacGillivray's 2003 film, , follows the exploits and crusades of the husband and wife underwater filmmaking duo of Howard and Michelle Hall as they embark on a ten-month expedition of the world's most vibrant and endangered coral reefs. Beginning at the Great Barrier Reef off the Australian coast, the Halls explore the vast underwater ecosystem and the scores of wildlife that thrive off of it. Traveling on throughout a number of the South Pacific's most spectacular reefs, the filmmakers also visit some reefs on the verge of extinction, making the sobering point that an entire reef's death occurs very quickly, while its creation takes thousands of years. marks the third oceanic, ecologically-themed IMAX film from MacGillivray, following and . Also featured in the film are famed sea explorer Jean-Michel Cousteau (son of the pioneering oceanographer Jacques Cousteau) and noted ichthyologist Richard Pyle.