14/10/2026
Once a year, the Great Barrier Reef puts on one of nature’s most remarkable displays.
Following cues from rising water temperatures, lunar cycles and sunset, many corals release tiny bundles of eggs and s***m into the water at the same time. The bundles float towards the surface, where fertilisation can take place and the next generation of coral begins.
Usually occurring over several nights in late spring or early summer, coral spawning can transform the water into an underwater snow globe.
The spectacle may be brief, but it plays an important role in the Reef’s renewal, resilience and biodiversity.