Coral Spawning

Coral spawning is one of the ocean’s most important reproductive events – and it usually happens while everyone’s asleep.

Divers log thousands of dives without ever seeing coral spawning. Not because it is rare, but because it is brief and easy to miss. The timing is precise, the window is short, and unless you are in exactly the right place at exactly the right moment, it’s just a regular coral night dive.

We focus on careful observation and consistent documentation, helping researchers turn scattered sightings into usable records. By spending long nights in the water and recording these events, we contribute small but meaningful pieces to a process that is still not fully understood.

How we monitor

Late night dives

Night dives allow us to witness spawning directly, noting down timing, depth, and coral species that spawned.

Egg traps

Fine mesh is placed over selected corals at the start of the dive to note whether spawning occurred while our attention was elsewhere.

Coral funnels

Funnels are positioned carefully to collect any released spawn, then checked the following morning during snorkeling surveys.

Why we monitor

Each observation is logged using clear, repeatable protocols, including time, location, environmental conditions, and the coral groups involved. Over time, these individual nights begin to form patterns. The data collected through this project supports ongoing coral spawning research carried out with Luminocean Indonesia and Ocean Gardener, contributing to wider efforts in reef restoration, monitoring, and long-term resilience.

If you’re curious what coral spawning actually looks like, the footage below brings together observations gathered over many dives. Each clip captures one small part of a much larger process, recorded as it occurred.

SAVE THE DATE

The calendar on the left traces the periods in 2026 when coral spawning is most likely to occur.
Why not plan your next trip around them and experience coral spawning in Bali with us?

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