Environmentalists have long overlooked the prospect of a cruise vacation—little surprise, given that the industry hasn't been especially known for its eco-sensibility. But happily, thanks to a slate of new cruise line partnerships with some of the biggest names in nature and conservation, the concept of green-minded cruising needn't necessarily be an oxymoron. Here, we round out six new cruise line partnerships that are sure to bring a refreshing ecotourism slant to your next cruise vacation. Each incorporates nature conservation, education, and/or appreciation via special programs of activities, including shore excursions in some of the world's most wondrous wildlife- and nature-rich locales.— Elissa Garay
