The coral larval pool technique, sometimes called Coral IVF, involves collecting coral eggs and sperm during mass spawning events in the wild, which was first pioneered by AIMS scientist Dr Andrew Heyward at Ningaloo Reef in Western Australia and was first developed on the Great Barrier Reef by Professor Peter Harrison of Southern Cross University. After fertilisation, they develop into larvae in protective mesh nets inside large inflatable pools floating on the ocean surface, where they are cultured for 4-6 days.
Once larvae are fully developed, there are two different approaches for settling them.
- The first, releases the larvae from the large Southern Cross University culture pools while they are still free-floating. This larval cloud release allows coral larvae to settle on the reef, but they may drift some distance before finding their preferred spot.
- Alternatively, larvae can be settled onto settlement devices in the large culture pools or some larvae can be transferred into smaller settlement pools. This method has been developed by SECORE International, whose pools are referred to as a CRIB (Coral Rearing In-situ Basin).