Tsunamis are often triggered by volcanic eruptions, earthquakes, landslides, or meteorites—and the waves can spread out thousands of miles. | National Geographic

📹 WATCH: A powerful series of undersea quakes struck north-east of New Zealand on Friday (March 5), causing tsunami waves to hit the country's coastline. Officials had warned that waves could reach 3m above high tide levels after the quakes, but the threat had passed by the afternoon. Read more: https://tdy.sg/30hDhF8 | TODAY