2Cliff Jumping
This is surely a fun activity but also an extreme sport, so that means you should be very careful.
This equipment-free extreme sport can be both fun and thrilling, but you should not dive from 20 meters (65.5 feet) or higher unless there are professional rescue scuba divers stationed in the water.
After you make sure you found a safe cliff with a significant amount of water underneath it, you can take the jump and enjoy the adrenaline.
Having a guide and training first is both essential and sensible.