Sail and Dive with Jean-Michel Cousteau

Jean-Michel Cousteau, the oceanographer and environmentalist, and the son of the legendary Jacques Cousteau, will host four sailing trips on the luxury liner Paul Gauguin in 2013. Aboard the one-to-two-week voyages, Mr. Cousteau will offer a series of lectures about his work exploring the world’s oceans, and he will also accompany guests on several dives. The trips are regularly $10,790 per person but currently there is a promotional fare of $5,395 per person. On the itinerary are visits to the Cook Islands and several stops in French Polynesia, including the Society Islands and the Austral Islands. (800.848.6172, www.pgcruises.com)

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