This underwater photo taken on April 5, 2024, shows a green turtle swimming at Lizard Island on the Great Barrier Reef, located 270 kilometres (167 miles) north of the city of Cairns. Australia's famed Great Barrier Reef is teetering on the brink, suffering one of the most severe coral bleaching events on record – the fifth in eight years – and leaving scientists unsure about its survival. (Photo by David Gray/AFP Photo)
