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Rosewood’s Caneel Bay, a former sugar plantation turned 166-room luxury resort, is located on a picture-perfect, national park-protected bay on St. John. The tropical sanctuary—that counts seven beaches among its natural assets—is offering excellent savings this April in honor of Earth Day (April 22). Guests who book overnights from April 23 through 30 will receive 30 percent off regular rates. But, even better, guests who donate four hours of their vacation on Earth Day to help clean the offshore coral reefs will receive a $100 resort credit. The Patagon Dive Shop at Caneel Bay is leading the annual clean-up efforts and guests who participate can either dive (if scuba-certified) some 15 feet deep to collect any debris and bottles or snorkel the shallow waters to skim for rubbish and help transport items by kayaking them to shore. What better way to celebrate Earth Day than by helping to ensure Caneel’s slice of paradise stays that way? Rates start from $612/night for a premium oceanfront room. Call 888/767-39663 to book and reference Earth Day Special. www.rosewoodhotels.com

For general trip-planning info, see our St. John Travel Guide.