MIAMI, Dec. 13, 2012 /PRNewswire/ -- Royal Caribbean Cruises Ltd. (NYSE, OSE: RCL) today announced that it was recognized as one of the top 100 companies in the world for its sustainability practices by being added to the NASDAQ OMX CRD Global Sustainability Index. The NASDAQ OMX CRD Global Sustainability Index is designed to track the performance of companies that are taking a leadership role in sustainability performance reporting. These companies have voluntarily disclosed their carbon footprint, energy usage, water consumption, hazardous and non-hazardous waste, employee safety, workforce diversity, management composition and community investing. "Royal Caribbean's addition to the NASDAQ OMX CRD Global Sustainability Index is recognition of our status as a global leader for its sustainability practices," said Richard D. Fain, Chairman and CEO of Royal Caribbean Cruises, Ltd. "Conserving the marine environment is an integral part of our economic success.