Lagunarium. This is a little motu offshore between Vaiare and Afareaitu. When we were there, there was just a sign on a tiny roadside stand and a guy with an outrigger to take you out to the motu. We have snorkeled on Kauai, Maui, the Big Island, Curacao, and Cozumel. Nothing we have seen comes close to this. They feed the fish in one of the little bays and there are turtles, small blacktip sharks, mobs of fish, big eels and so much more. They also had cables out to the reef and the coral was spectacular. So many fish and melon sized clams. We've read recently they have a snack stand now so I hope it's still there and going well.