The waters of Bunaken National Marine Park are up to 1,566 m deep in Manado Bay, with temperatures ranging between 27 and 29 °C.
It also claims to have seven times more genera of coral than Hawaii,[1] and has more than 70% of all the known fish species of the Indo-Western Pacific.
[2] Oceanic currents may explain, in part, why Bunaken National Marine Park has such a high level of biodiversity.
This is particularly true on the south side of the crescent-shaped Bunaken Island, lying in the heart of the park.
A snorkeler or diver in the vicinity of Lekuan or Fukui may spot over 33 species of butterfly fish and numerous types of groupers, damsels, wrasses and gobies.