Coral nurseries are of increasing importance because Reefs around the globe are threatened by human activities. Like many parts of the world, the economy on Koh Tao is reliant upon our natural reef areas and the visitors they bring.
Koh Tao currently has a number of coral nurseries using different techniques for research and restoration purposes. It is hoped that coral colonies from these nurseries can help add to the reefs around Koh Tao and provide a means of restoring damaged areas faster than would naturally occur, as well as providing additional dive sites. A number of organisations including Save Koh Tao and dive operators on Koh Tao have begun constructing small coral nurseries to test the feasibility and success of different methods. So far 3 different types of structures have been test-built and all have been successful.
Big Blue conservation aims to contribute to this research, so that after a few months trial period the relative price and performance of each method can be optimised before making coral nurseries more widespread around the island. In the future, we would like to see a coral nursery near each dive site, and a few in places that currently are not being dived to provide alternative dive sites.
With nurseries in place in close proximity to dive sites, should a boat anchor or SCUBA divers break the corals, those fragments can be quickly brought to a secure growing area until they become large enough to transplant back onto the dive site. The nurseries themselves also serve as habitats for fish and a variety of other marine organisms, helping to maintain the reef abundance and biodiversity around Koh Tao.