The main purpose of marine protected areas (MPAs) is to conserve biodiversity and replenish fish stocks by limiting human activities in designated zones.

To preserve marine ecosystems, human activities like mining, drilling, and fishing are either prohibited or strictly controlled in marine protected areas (MPAs). By protecting marine species' habitats and avoiding overexploitation, MPAs serve the main goal of biodiversity conservation. MPAs contribute to the replenishment of fish stocks and the maintenance of sustainable populations by restricting fishing and other harmful activities. In addition to supporting scientific study, these protected areas foster ecosystem health and act as havens for endangered species. MPAs are a crucial instrument for maritime conservation because they strike a balance between sustainable resource management and environmental preservation.