Namena is a marine reserve and the diving is excellent. Although somewhat different from that in Somosomo, it is equally as good if not even more diverse. Namena has walls, swim throughs, reefs, bommies, pinnacles, etc., and tons of marine life from macro to wide angle. Jean-Michel Cousteau rates Namena as the best dive area in Fiji. The liveaboards visit Namena far more frequently than Somosomo. The boat ride can vary substantially depending on where you start out (Cousteau is the closest - other than Namena Resort itself), Koro Sun the farthest), the weather and sea conditions (it is an open crossing of about 25 miles), etc. You should expect at least 50 minutes to an hour each way on a good day, but be prepared for a (sometimes much) longer ride.