An underwater volcano in Tonga erupted, causing a 7.4 magnitude earthquake that was visible from space and brought tsunami waves slamming into the Pacific island's coast, covering it in ash and cutting it off from rescue.
Forget “Sharknado” — there is a real-life Sharkcano! A new documentary, “Sharkcano,” premiered on National Geographic in July as part of National Geographic’s Sharkfest, and explored sharks that live and hunt around underwater volcanoes in extreme conditions that are not palatable to many other forms of life. “Ocean engineer Brennan Phillips led a team to …