Paul Gauguin Cruises has announced an exclusive voyage with explorer and environmentalist Jean-Michel Cousteau, departing May 22. Cousteau will join guests of the Paul Gauguin as the ship sails for 16 days to Fiji, Tonga, and the Cook and Society Islands. He will offer a series of lectures with videos of his work in the oceans of the world, as well as accompany several dives from the ship. Fares start at $6,545 per person, double.

The ship also offers the Ambassadors of the Environment Youth Program, which Cousteau and his Ocean Futures Society created. The program introduces travelers to the natural wonders of French Polynesia and aims to give participants ages 9 to 17 hands-on experience in marine and island ecosystems. Young Ambassadors explore coral reefs, hike rainforest trails and visit marae (ancient Polynesian temples). They learn how black pearls and vanilla are cultivated, how volcanic islands become coral atolls and how to paddle an outrigger canoe. Parents are encouraged to join children on eco-excursions and other activities aboard and ashore. For more information, call 800-848-6172 or visit www.pgcruises.com.