Jumping off a cliff into the sea is one of the easiest adrenaline rushes you can get. You step up, switch your brain off and you're airborne! It doesn't get any more simple. But as well as being a lot of fun, there's plenty of things that can go wrong so you have to take a safe, go-slowly approach. If you've never done a jump, the best thing you can do is find
a spot where people jump regularly and get out there on a good day.
Watch other jumpers and note the spots they're going off. Ask people about the different spots, but ultimately you're going to need to make up your own mind which jump spots are safe and which aren't. Start small and stay well within your comfort zone until you're ready to go bigger.
