Aquadisco. This little semisubmersible takes 12 people to out-of-the-way sites in air-conditioned comfort. There's a free pickup service. PK 3, Coastal road, Maharepa, Moorea, Windward Islands. 56–40–90.

Mer et Montagne Excursions. This hiking company runs underwater tours with aquascopes or glass-bottom boats that skim across the surface of the lagoon to allow passengers to see the coral below. 56–16–48.