A tsunami is a massive wave that forms in the ocean, usually triggered by underwater earthquakes, volcanic eruptions, or landslides. When the Earth's crust shifts beneath the ocean, it displaces a colossal amount of water, creating a powerful wave that can travel across entire oceans. As the tsunami approaches the coastline, it can grow taller and taller, becoming a towering wall of water that crashes onto shore with tremendous force. The impact of a tsunami can be devastating, causing widespread flooding, destruction of buildings and infrastructure, and loss of life. It's crucial to heed tsunami warnings and seek higher ground if you're in a coastal area, as being prepared can help minimize the risks associated with these powerful natural events.