Where? The Philippines is an archipelago, meaning it's made up of many islands. One of the most notable tsunami events happened in the Mindanao region, specifically in Surigao del Norte and Surigao City. When? This tsunami happened on February 3, 2017, a date that will be remembered by those who experienced it. How did it happen? The tsunami wasn't caused by a big earthquake, like you might think. It was triggered by an underwater landslide! You see, an earthquake caused a huge chunk of the ocean floor to slide, displacing a massive amount of water, which created the destructive waves that hit the coast. It's like if you threw a giant rock into a bathtub, the water would splash up everywhere! This is a great example of how even seemingly small things can have big consequences in the natural world.