New Caledonia


Tropical environments are not the most suitable for macro-algae. Nevertheless, New Caledonia boasts a high level of biodiversity in all three major algae families. There are no endless fields of seaweed as in Europe, but the different environments, from the lagoon to the outer slope, allow numerous species to establish and grow up: caulerpa and halimeda on the sandy lagoon floor, sargassum and turbinaria around the islets and numerous species of red seaweed on the outer slope, where the water is cooler. The latter can be found at depths of up to 50 metres.








Boergesenia forbesii
Amphiroa tribulus
Amansia glomerata
Valonia sp














Sargassum sp
Stypopodium_sp
Turbinaria ornata
Ulva sp
Peyssonnelia sp
Melanthalia vieillardii
Mastophora pacifica
Callophycus serratus








Hypnea sp
Hydroclathrus clathratus
Halimeda macroloba
Halimeda heteromorpha






Gracilaria_salicornia
Dictyosphaeria verslaysii
Caulerpa serrulata
Ceratodictyon spongiosum








Boodlea sp
Bornetella sphaerica
Caulerpa chemnitzia
Caulerpa cupressoides




Acknowledgements for Assistance in Species Identification
Claude Payri
Institut de Recherche pour le Développement

