Scuba diving is dangerous enough on its own, but a group of divers off the coast of Mabini, Batangas in the Philipines witnessed a magnitude 5.7 earthquake while in shallow waters. The earthquake was one of a swarm that first struck Batangas in April and did not stop until August. This swarm forced the relocation of 14,000 people and caused over $300,000 USD in damage to roads, churches, and residential buildings.
The person who took this footage, Jan Paul Rodrigues, was one of a team conducting a training exercise on a course when the ground beneath them began to shake violently. The earthquake dislodged stones and sent plumes of sediment off the sea floor. Fortunately, the divers walked away without injuries, and none of these earthquakes triggered a tsunami, so you can enjoy the terrifying spectacle relatively guilt-free.