The Last Reef 3D 2013. This IMAX documentary opens with footage of 1946 atomic bomb tests at Bikini Atoll. The blasts destroyed the coral reef, but fifty years later it recovered. The film uses 4K 3D cameras to explore vibrant reef systems in Palau, Vancouver Island, French Polynesia, Mexico, and the Bahamas. It compares coral communities to cities, revealing the symbiotic relationships between marine species. The documentary warns that climate change and ocean acidification threaten these ecosystems. Time-lapse photography parallels New York City traffic with fish moving through coral canyons. Despite the grim outlook, the Bikini Atoll recovery offers hope. The film is a powerful reminder of nature's resilience and the urgent need for conservation .