A few kilometres off the north coast of Sumbawa, the national park island of Pulau Moyo (entrance fee Rp2500) is probably the most rewarding destination in Sumbawa, surrounded by beautiful coral reefs and home to wild pig, monitor lizards, 21 species of bat, huge herds of native deer and hordes of crab-eating macaques. The best time to visit is in June and July, though the seas are clear and quiet from April. There are basic private rooms at the PHPA post at Tanjung Pasir on the south coast, where most boats from the mainland arrive; a Rp5000 donation is expected, and you need to bring your own food. Renting a fishing boat from Tanjung Pasir and going fifteen minutes east to Stama reeft is very rewarding, with lots of sharks and turtles. There's nowhere on Moyo to rent masks and snorkels so bring your own; fins are advisable due to the strong currents. To hire a PHPA guide for trekking from the PHPA post costs Rp30,000 per person a day.

To get to Moyo, take a bemo (until 1pm; Rp2500) from beside Seketang Market in Sumbawa Besar to Air Bari , a small port settlement to the northeast. From Air Bari, you can charter a boat to Moyo for US$15-25 for up to fifteen people. Regular boats are less good value at US$10 per person; they leave infrequently, sometimes three or four times a day, at other times only once or twice a week.