//
You can rent or buy snorkeling stuff but do yourself a favor and bring your own. Just about anywhere in the lagoon is pretty decent. The channel between Motu Fareone and Motu Tiahura off the northwest point is particularly nice. You can swim out to it from the beach but it's a long swim and there are strong currents in this area. Otherwise hire a boat. A good tour to take is Hiro's Tour from Club Bali. It is a reasonable price and you get to do a feeding with sharks, stingrays and also a picnic on a motu.