This series follows expeditions of Jean-Michel Cousteau and his young crew of divers and ocean scientists as they explore an array of natural phenomena, investigate little-known territories and undersea ecosystems, and come face to face with friendly and not-so-friendly land and ocean inhabitants. The initial two-part episode, "Voyage to Kure," sails to the outermost islands in the Northwest Hawaiian Island Archipelago where diverse wildlife populations are found to be struggling against the effects of pollution, mining, over-fishing and development.