A tsunami is a large, powerful wave usually caused by an earthquake or other underwater disturbance. Tsunamis differ from normal ocean waves in that they are typically much larger, travel faster, and have higher energy levels. They are capable of causing significant damage to coastlines and nearby cities.

Here are some facts about tsunamis that you should know:

• Tsunamis can travel hundreds of miles per hour in the open ocean, but may slow to as little as 30 mph near a shoreline.
• Tsunamis can reach heights of up to 100 feet in the open ocean, but may only be a few feet high when they reach land.
• Tsunamis are usually undetectable by traditional wave monitoring systems. They can only be detected by specialized seismic instruments.
• Tsunamis can cause significant flooding, erosion, and damage to coastal communities.
• Tsunamis can be caused by both earthquakes and underwater landslides.

It is important to be aware of the potential for tsunamis in areas near large bodies of water, as they can occur with little warning and cause significant destruction. With proper preparations and planning, however, it is possible to mitigate the impacts of these natural disasters.