Watch out for the Sharkcano! What happens when an underwater volcano erupts?

An active crater in the South Pacific - in which hammerhead and silky sharks have been found - is about to blow. Could this be a real-life sequel to the sci-fi hit Sharknado?Name: Sharkcano.Age: The first recorded eruption of Kavachi, a submarine volcano, was in 1939, but it's almost certainly been around longer than that. Continue reading...