Pneumatophores are specialized roots that are found in some types of vegetation that grow in wetland ecosystems. Pneumatophores are found in a variety of wetland ecosystems, including mangrove forests, tidal marshes, and swamps. Mangrove forests are coastal ecosystems that are found in tropical and subtropical regions around the world. These ecosystems are characterized by the presence of trees and shrubs that are adapted to living in salty or brackish water. Pneumatophores are found in many species of mangrove trees and help the trees to obtain oxygen from the air, even when they are submerged in water. Tidal marshes are coastal wetlands that are found in areas with a high tidal range. These ecosystems are characterized by the presence of salt-tolerant grasses and other plants that are adapted to living in the fluctuating water levels of the tidal zone. Pneumatophores are found in some species of plants that grow in tidal marshes and help the plants to obtain oxygen from the air in areas that are periodically flooded by the tides. Swamps are wetlands that are characterized by the presence of standing water and trees or shrubs. Swamps can be found in a variety of different ecosystems, including temperate forests, tropical rainforests, and grasslands. Pneumatophores are found in some species of trees and shrubs that grow in swamps and help the plants to obtain oxygen from the air in areas with poor drainage.