Food Chain, Nitrogen Isotopes - analysis, Environmental Monitoring, Animals, Ecosystem, Fishes, Chlordecone - analysis, Invertebrates, Water Pollutants, Chemical - analysis, Coral Reefs, Aquatic Organisms, Insecticides - analysis, Carnivores, Organic matter, Marine pollution, Food contamination, Consumers, Food webs, Organisms, Suspended organic matter, Aqua...