Within the Bunaken Marine Park, visitors can see various strange and colourful marine life along its sea bed. To reach this park, you can take a motorboat. The journey from Manado takes around 40 minutes. Entrance fee is 25,000 rupiahs per person per visit.
Oceanic currents may explain, in part, why Bunaken National Marine Park is such a treasure trove of biodiversity. Northeasternly currents generally sweep through the park but abundant counter currents and gyros related to lunar cycles are believed to be a trap for free swimming larvae. This is particularly true on the south side of the crescent-shaped Bunaken Island, lying in the heart of the park.The translucent waters of the Bunaken seas enable people to clearly view numerous sea biota. A snorkler 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. The gobies, smallish fish with bulging eyes and modified fins that allow them to attach to hard surfaces, are the most diverse but least known group of fish in the park. The most attractive view is the steep vertical sloppy coral reef that plunges down as deep as 25-50 meters. Feast your eyes on 91 types of fish found in the Bunaken National Park, amongst which are the locally known gusimi horse fish (Hippocampus), the white oci (Seriola rivoliana), yellow-tailed lolosi (Lutjanus kasmira), goropa (Ephinephelus spilotoceps and Pseudanthias hypselosoma), ila gasi (Scolopsis bilineatus) and others.
Divers may also meet mollusk like the giant kima (Tridacna gigas), goat head (Cassis cornuta), nautilus (Nautilus pompillius) and tunikates/ascidian.For those who enjoy scuba diving, this is a great place to be. With about 20 dive spots to choose from, divers will have the chance to swim below the sea, and frolic joyfully while admiring the sea creatures. Biologists believe that the abundance of hard corals is crucial in maintaining the high levels of diversity in the park. Hard corals are the architects of the reefs, without them, numerous marine organisms would be homeless and hungry. Many species of fish are closely associated with particular types of corals (folious, branching, massives, etc.) for shelter and egg-laying. Bunaken Marine Park has become an important example of how Sulawesi, and the rest of Indonesia, can work to protect its natural resources.