There's some really cool scuba diving to be done here, and you can get your certificate on a budget as well. You can choose the Caribbean coast and explore beautiful coral reefs and colorful fish, or dive with the big ones in the Pacific Ocean.
Scuba diving is cool.
It's not really a sport, as in that you have to work hard, on the contrary. Like this, you use less oxygen and can stay under longer. So what you're doing is basically just floating underwater, watching them amazing fishies, breathing deep and slow and moving a limb now and then to change direction. If you get a certificate from one of them yo can basically go diving anywhere in the world. Or you can just do an introductory dive.