Tropical majority map (IMAGE) Smithsonian Tropical Research Institute Caption The tropics are home to most of the world’s biodiversity and the majority of directly ocean-dependent people. Credit Jorge Aleman, STRI Usage Restrictions Credit must be given to the creator and the organization. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.