Sali Bay is on of the best places on earth for snorkeling. Only the House Reef offers more than 4 hours of snorkeling. You can see Reef-Sharks, Turtle, Sea Snake, big schools of mackarels, batfish, unicornfish and fusiliers. For the good eyes unusual kinds of shrimps and crabs, rare nudibranchs, flatworms and gobies.
The Night Snorkeling is a must at Sali Bay. Good chance to see the Walking Shark Halmahera. Discovered 2013.
You can also join the boat with divers.