The Great Lagoon Regatta ( +687 795 601 ) is held on the first weekend of June . Noumea Signal Island Marine Park covers less than 20 kilometers . Natural Park of the Coral Sea , less than 20 kilometers from the capital , is great for snorkeling . The world 's largest marine managed area is Signal Island Marine Park .
Noumea Signal Island Marine Park covers less than 20 kilometers . Natural Park of the Coral Sea , less than 20 kilometers from the capital , is great for snorkeling . The world 's largest marine managed area is Signal Island Marine Park .