‘Earthquake’ Off Florida Coast Was Actually Explosion Set Off By Navy

Not living in Florida, I wasn't aware of an explosion that felt like an earthquake. This is a pretty interesting story. Short, but interesting.

The Navy confirmed it was detonating underwater explosives to test a new ship's ability to withstand shock.
Saturday’s undersea “earthquake” off northeast Florida actually was the Navy doing an experimental explosion, said John Bellini with the U.S. Geological Survey in Colorado.