Tsunami: If in a map containing water, this would be activated by an admin and based on random selection it may have an earthquake before. The water will rise, then a few feet offshore, a wave will form and can get to be as tall half the torso of the giant dictator statue in GSF Paradise. Then, if you go under, you have about 25 seconds to reach oxygen before you start flailing your arms, when you slowly flail your arms you can slowly hear your heart thump before it stops completely.