Sustainable Travel & Ecotourism

Some of the best wildlife cruises are packaged by Oceanic Society Expeditions (tel. 800/326-7491; www.oceanicsociety.org). Whale-watching jaunts and some research-oriented trips are also featured. You can swim with humpback whales in the Dominican Republic, for example.

Puerto Rico's varied and often hard-to-reach natural treasures have been conveniently packaged into a series of affordable eco-tours. AdvenTours, El Yunque (tel. 787/889-0251; www.adventourspr.com), features customized private tours with activities like bird-watching, hiking, camping, visits to coffee plantations, and kayaking. Aventuras Tierra Adentro, 268 Piñero Ave., San Juan (tel. 787/766-0470; http://puertoricovacation.com), specializes in rock climbing, body rafting, caving, and canyoning, among other activities. Eco Xcursion Aquatica, Road 191, Km 1.7, Rio Grande, Fajardo (tel. 787/888-2887), offers some of the best rainforest hikes and mountain-bike tours.

Machias Adventures (tel. 888/427-3497 or 203/227-7337; www.machiasadventures.com) arranges adventure tours to St. Vincent, including hiking up a volcano, a day sailing with a crew, seeking out the huge variety of bird life, and hiking up a river canyon to a dramatic water pool -- a perfect pool for swimming. The cost of these 7-day jaunts is $2,500 per person, based on double occupancy.

Although one could argue that any vacation that includes an airplane flight can't be truly "green," you can go on holiday and still contribute positively to the environment. You can offset carbon emissions from your flight in other ways. Choose forward-looking companies that embrace responsible development practices, helping preserve destinations for the future by working alongside local people. An increasing number of sustainable tourism initiatives can help you plan a family trip and leave as small a "footprint" as possible on the places you visit.

General Resources for Green Travel

The following websites provide valuable wide-ranging information on sustainable travel. For a list of even more sustainable resources, as well as tips and explanations on how to travel greener, visit www.frommers.com/planning.

• Responsible Travel (www.responsibletravel.com) is a great source of sustainable travel ideas; the site is run by a spokesperson for ethical tourism in the travel industry. Sustainable Travel International (www.sustainabletravelinternational.org) promotes ethical tourism practices and manages an extensive directory of sustainable properties and tour operators around the world.
• In the U.K., Tourism Concern (www.tourismconcern.org.uk) works to reduce social and environmental problems connected to tourism. The Association of Independent Tour Operators (AITO; www.aito.co.uk) is a group of specialist operators leading the field in making holidays sustainable.
• In Canada, www.greenlivingonline.com offers extensive content on how to travel sustainably, including a travel and transport section and profiles of the best green shops and services in Toronto, Vancouver, and Calgary.
• In Australia, the national body which sets guidelines and standards for ecotourism is Ecotourism Australia (www.ecotourism.org.au). The Green Directory (www.thegreendirectory.com.au), Green Pages (www.thegreenpages.com.au), and Eco Directory (www.ecodirectory.com.au) offer sustainable travel tips and directories of green businesses.
• Carbonfund (www.carbonfund.org), TerraPass (www.terrapass.org), and Carbon Neutral (www.carbonneutral.org) provide info on "carbon offsetting," or offsetting the greenhouse gas emitted during flights.
• Greenhotels (www.greenhotels.com) recommends green-rated member hotels around the world that fulfill the company's stringent environmental requirements. Environmentally Friendly Hotels (www.environmentallyfriendlyhotels.com) offers more green accommodation ratings. The Hotel Association of Canada (www.hacgreenhotels.com) has a Green Key Eco-Rating Program, which audits the environmental performance of Canadian hotels, motels, and resorts.
• Sustain Lane (www.sustainlane.com) lists sustainable eating and drinking choices around the U.S.; also visit www.eatwellguide.org for tips on eating sustainably in the U.S. and Canada.
• For information on animal-friendly issues throughout the world, visit Tread Lightly (www.treadlightly.org). For information about the ethics of swimming with dolphins, visit the Whale and Dolphin Conservation Society (www.wdcs.org).
• Volunteer International (www.volunteerinternational.org) has a list of questions to help you determine the intentions and the nature of a volunteer program. For general info on volunteer travel, visit www.volunteerabroad.org and www.idealist.org.