🔬 Discovery

Mass coral spawning

Desove masivo y sincrónico de corales

Date
1981 (publicado en 1984) · confidence high
Place
Magnetic Island, Queensland, Australia
Credited to
Peter Harrison, Russ Babcock, Carden Wallace and colleagues (James Cook University)
Field
Life & health

What was discovered

On several nights after the full moon in late spring, dozens of coral species on the Great Barrier Reef release eggs and sperm together, a phenomenon first observed in 1981. It changed the understanding of reef reproduction and biodiversity.

Described in Science in 1984. Spawning had been noted before in the Caribbean, but the multi-species scale on the Great Barrier Reef was the discovery.

What it led to

  • reef breeding and restoration with larvae
  • studies of hybridisation and speciation in corals
  • forecasting spawning timing with the moon and temperature

Links

Sources✓ verified 2026-11-04