Mangrove Forest (image) United Nations University Share Print E-Mail Caption Found mostly in the tropics straddling the land and sea, mangroves make up less than half of one percent of forests of all kinds worldwide. Taken together, some 70 species of mangroves are found in 123 tropical and sub-tropical nations and territories but occupy just 152,000 square km in total -- an area slightly larger than Nepal. Experts are urging policy makers to preserve mangroves and their essential services to nature and humanity alike, saying their replacement with shrimp farms and other forms of development is a bad economic tradeoff both short and long-term. Credit UN Usage Restrictions None Share Print E-Mail 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.