The document provides information about the cruise ship industry and sustainability issues. It discusses statistics on the size of the cruise industry and largest cruise lines. It then covers various environmental impacts of cruise ships such as toxic waste disposal, damage to coral reefs from anchoring, air pollution, and impacts on marine life from noise and collisions. The document also addresses social issues like crew employment conditions and ports of call. Finally, it discusses sustainable practices being adopted by some cruise lines like waste management systems, hull coatings to reduce energy use, and targets to cut emissions and increase efficiency.