Ecotourism has grown rapidly but definitions vary widely. It aims to involve travel to natural areas in a sustainable way that benefits the environment and local communities. However, in practice ecotourism faces many criticisms. Large-scale operations can degrade the environment and exploit local people rather than helping them. There is a lack of regulation allowing "greenwashing" where unsustainable practices are misleadingly marketed. Negative impacts on communities include displacement, threats to culture, and environmental damage. Better standards and limits on commercialization are needed to ensure ecotourism truly achieves its goals.