The coastal and marine areas of Bintan Regency are rich in coral reef, seagrass, and mangrove ecosystems as well as various types of marine biota such as dugong and sea turtles associated with these coastal and marine ecosystems. This area is designated as a marine protected area through the Decree of the Minister of Marine Affairs and Fisheries of the Republic of Indonesia Number 18 of 2022 with a total area of 138,561.42 Ha.
Tambelan Island, one of the mainstay islands in the Bintan Archipelago, has been designated as one of the 12 priority sea turtle nesting areas by the Government of Indonesia. This is due to its contribution in maintaining sea turtle populations in the territorial waters of Indonesia, Malaysia, and Singapore which are dominated by Green Turtles, Hawksbill Turtles. Tambelan Island Conservation Area has been reserved through Riau Islands Governor Decree Number 1304 of 2018 with a total area of 1,026,284.49 Ha.
In Paloh District, Sambas Regency, West Kalimantan, sea turtle nesting beaches stretch from Camar Bulan Hamlet in the north (Indonesia-Malaysia Border) to Selimpai Beach in the south. The marine protected area in Paloh was established through the Decree of the Minister of Maritime Affairs and Fisheries of the Republic of Indonesia Number: 93/KEPMEN-KP/2020 which is further managed as the Paloh Coastal Park and Surrounding Waters in West Kalimantan Province covering a coastal and water area of 168,291.06 hectares.