Each year, under the soft glow of the August full moon, a quiet miracle unfolds beneath the waters of the Florida Keys.
Coral reefs — often called the “rainforests of the sea”— release millions of tiny bundles of life into the water, synchronizing their spawning in one of nature’s most awe-inspiring events.
This annual coral spawning is more than a spectacle; it’s the key to the survival and recovery of our coral reefs. In a world facing mounting environmental challenges, it serves as a powerful reminder of resilience, hope and the delicate balance we must protect.
Coral spawning typically occurs a few days after the full moon in late summer, when water temperatures are warm and the moon is bright. Hard corals like elkhorn, staghorn and brain corals simultaneously release eggs and sperm into the water column, relying on the currents to carry and fertilize their offspring. This synchronization increases the chances of successful reproduction and the birth of new coral colonies.
For the Keys, home to North America’s only living coral barrier reef, this natural event is vital. Coral reefs not only support marine biodiversity but also protect our shorelines, support tourism and fishing and contribute to the cultural identity of our island communities.
Despite their strength, coral reefs are under severe threat. Rising ocean temperatures, pollution, unsustainable fishing and coastal development have led to widespread coral bleaching and disease. In recent decades, the Keys have lost more than 90% of their living coral cover.
