Estuaries are wetlands that form near the mouths of rivers along ocean coastlines. Many trees fail in estuaries, but mangroves are an exception. Mangroves are common in tropical estuaries, especially the Everglades of southern Florida. They thrive in the Everglades because they tolerate much greater salinity levels than other plants do. They also have prop roots that support their weight in the Everglades soil. The soil is wet and spongy, and often is covered in water. While the adaptations of mangroves are ideal for the Everglades, they are less useful for other tropical regions, such as tropical rain forests. They can survive in these regions, but are less common there. Drag each description to show whether or not it describes the estuary ecosystem that is part of the Florida Everglades.