Not far west of Doini Island is Gona Bara Bara Island, and just off the northwest shore is a dive site known as the Manta Ray Cleaning Station. Just a few metres below the surface, there is an isolated bommie (a natural spire, covered in coral, rising from the sea floor). Around the bommie giant, graceful mantas (some with wing spans of up to 5m) are cleaned by tiny wrasses; it is one of the best places on earth to see this happening.
Snorkelling is also possible, though high winds make it (and diving) difficult between June and September. Unfortunately only dive charters are visiting here although it may be possible to arrange a snorkelling trip with local boat operators in Samarai Island.
