Where and when to see coral spawning
On a few nights a year, set by water temperature and the moon, reef corals release clouds of eggs and sperm together. Night dives timed to the forecast can catch it.
This guide documents sightings in 2 Good Dives regions. The most regions are in peak season in September–November.
Coral spawning sighting calendar
Calendar months, every year
Peak = best odds · ● = regularly seen · blank = unlikely.
Calendars describe animal presence, not weather or site access; check each region’s dive season. For grouped animals, a marked month may apply to only one member of the group. Sightings vary by site and dive.