Hunga Tonga-Hunga Ha‘apai Erupts

Explaining The Universe on Instagram: "A tsunami doesn’t begin with towering waves crashing onto shore, it often starts deep beneath the ocean. Most tsunamis are triggered by powerful undersea earthquakes, when tectonic plates suddenly shift and displace massive amounts of water. This sudden movement creates a pulse of energy that travels outward across the sea. In the open ocean, tsunami waves may only be a few feet tall and pass unnoticed beneath ships, but they move incredibly fast, up to 500

Tonga volcano: Why was it so big, and are there others we need to watch out for?

How the Hunga Tonga-Hunga Ha'apai volcano erupted and why it caused tsunami warnings