Mangrove plants include trees, shrubs, ferns and palms. These plants are found in the tropics and sub- tropics on river banks and along coastlines, being unusually adapted to anaerobic conditions of both salt and fresh water environments. These plants have adapted to muddy, shifting, saline conditions. They produce stilt roots which project above the mud and water in order to absorb oxygen. Mangrove plants form communities which help to stabilise banks and coastlines and become home to many types of animals.