Tsunamis can be more than 30 metres tall! After tsunamis crash into a coastline, their harmful effects can linger for years. Besides the impact to people, they can also be disastrous for the environment. Tsunamis can strip sand from beaches and uproot trees. Salt from ocean water can seep into the ground and stop plants from growing. Tsunamis also kill many animals and destroy their homes. Learn about the important actions people are taking to help areas affected by tsunamis recover. Part of the Disasters and the Environment series.