Sustainability principles refer to the environmental, economic, and socio-cultural aspects of tourism development, and a suitable balance must be established between these three dimensions to guarantee its long-term sustainability’. There are hundreds of definitions of ecotourism and in general most of them consider that ideally ecotourism is nature based tourism that embraces the principles of sustainable tourism. Some desert hotels and resorts, where water is scarce, boast of jacuzzis, bathtubs and swimming pools. Ecotourism voyages to Antarctica have posed serious threats to bird and marine life in a fragile ecosystem while the route to Mount Everest is littered with human refuse and even corpses.