BUNAKEN BEACH

Bunaken is one of Indonesia's most famous dive/snorkeling areas, and it draws scuba divers & snorkelers from all over the world. In addition to Bunaken itself, a rather featureless banana-shaped island, the National Park includes the neighboring islands of Manado Tua, a distinctive cone-shaped extinct volcano, Siladen, Montehagen, Nain, and Nain Kecil

Bunaken is about 45-60 minutes by boat from Manado. Most resorts will arrange transfers from the airport for their guests. Alternatively, a public boat leaves daily except Sunday at 2-3PM from the canal on the north side of the market. The cost is 25,000Rp for tourists (7,000Rp for locals). It returns to Manado from the jetty in Bunaken village around 8-8:30AM every morning except Sunday. You can also charter a boat both ways at anytime.

The park is famed for the clarity of its water (35m visibility is common in the summer dry season), the abundance of coral and fish, and for the precipitous "walls" at some sites. Bunaken Timur, right off the east coast of the island and featuring all of the above, is according to some the best dive site in all Indonesia.

Except for the very largest pelagics, nearly everything can be found at Bunaken. Reef inhabitants include white and black tip reef sharks, giant sea turtles, napoleon fish, and dugongs. 

You may frequently run into dolphins, and occasionally schools of whales.

Bunaken is barely a degree above the equator and thus tropical. The "Rainy Season" from November to mid April, brings frequent rains, sometimes in storms lasting for several days, which make the air nice and cool but also reduce visibility. The "Dry Season" from May to October, when temperatures climb to 35° and visibility reaches a maximum. Bunaken receives far less rain than the mainland and is well ventilated with sea breezes.

Fees/Permits
As of September 2008, entry to the park costs either Rp 50,000/day or Rp 150,000/Calendar year. Even though the fee does not seem to be automatically levied upon entrance to the island, it is the responsibility of all visitors to the Park to have one, and most reputable dive shops will supply them. As proof of payment, you will receive a plastic tag that must be carried at all times — it's waterproof and can be attached to your diving gear.
Tourism on Bunaken has been very much geared towards divers over the years, but the trend seems to be changing and more and more snorkelers are visiting the area as too are those who wish to just relax immersed in nature...away from the hustle and bustle of city life. Possible activities for landlubbers include: 
Beach-combing, especially at low tide when the reef top is accessible 
Hiking to some of the secluded coves on the Eastern and Northern part of the island, but trails are poorly marked 
Fishing, but only outside of the park boundaries: hire a boat or join one of the local fishing boats. 
Dolphin & Whale watching, either while on diving or snorkeling boat trips or by hiring a boat.