Coral spawning on the Great Barrier Reef

It may not snow in Queensland in December, but underwater, the Great Barrier Reef is putting on its own kind of snowfall in a dazzling underwater exhibition of new life. Giant clams, molluscs and gastropods joined the Great Barrier Reef’s headline event, the annual synchronised coral spawning, across much of the 2600km/1615 miles length of the Reef last night (10 December 2025), putting on a jaw-dropping show after some corals performed a curtain raiser in November. This underwater snowstorm of coral sperm and eggs showcases one of the world’s most visually incredible natural phenomena.