Saint Martin’s main island coral ecosystem is directly threatened by anthropogenic interference from many sources as fishing to tourism including sewage discharge, plastics, oil spillage, and other form of pollution. This research is for evaluating the present status of the vulnerable ecosystem and setting up the baseline for the ecosystem to compare the changes in condition for future study. Because the study area had no earlier toxicological records, it might serve as a baseline for future research at the specified ecosystem and surrounding area.

For the prograding of countries economic development, the tourism contributes a significant part in GDP. A trend of increasing order of tourism with bad practices can be visualizes by the study of (SMA, 2008), stated more than 3000 tourists visited the island by six ships along with other trawlers. According to (Rout et al., 2013) the contaminants intensity is directly proportional to the rate of tourism to the area. As a result, that could also be a source for introducing pollutants in the naturally important coral ecosystem. Mainly, the infrastructure development for fulfilling the tourists need like accommodation, transportation, power supply, restaurant, security, social services etc. put pressure to natural system by exceeding the carrying capacity, which ultimately causes the higher concentration of contaminants in the sensitive sites (Sarimin & Mohamed, 2012). Enrichment indices confirm anthropogenic inputs of Ni and Cd, ecological risk indices identify Cd as the major driver of risk, and mixture analysis shows highest toxicity probability at St-5. This integrated framework provides a clear pathway for management interventions in the MPA. Also, the other probable pollution source discussed in the study should be considered and proper effluent treatment process must be adopted so that the ecosystem is not contaminated due to their acts. Key findings reveal high Cd concentrations, with values reaching up to 5.279 ppm in station 9, also the alarming levels of cadmium in station 9, exceeding ecological thresholds, while Nickel concentrations in stations 5 and 6 indicate very high contamination. Ni concentrations were notably high in stations 5 and 6, with CF values indicating very high contamination (CF > 6). The CD analysis supported these findings, with stations 5, 6, and 9 exhibiting values indicating a considerable degree of contamination (CD > 16). The Igeo results further emphasized extreme pollution levels for Cd in station 9, crossing the threshold of 5, which is indicative of severe contamination. ERI and PER assessments highlighted a high to very high risk from Cd, particularly in station 9, where ERI exceeded 320, indicating a significant ecological threat. Ni exhibited moderate risks in specific stations, with ERI values ranging between 80 and 160. HQ, TRI, and mHQ analyses revealed potential risks to aquatic ecosystems from these metals, with TRI values in stations 2, 5, and 6 indicating very high toxic risks (TRI > 30). As in Bangladesh, recent trend for travelling in coral-oriented island, Saint Martin, not in eco-friendly manner is observed. The medicines that are extracted from corals saves lives. If the ecosystem gets toxicant by abundance of heavy metals than the sources of this medicine will longer be useful, hence be life threatening. So, monitoring and assessing ecotoxicity is critical for determining the cause of the toxicity and subsequently aiding in the measurement of solutions through action.