Scuba diving
Hi JoeL91,
Master Dive (link below) offers PADI (Professional Association of Diving Instructors) certification courses at every level. Their webpage has a Rio number (21), you should call them.
I personally think you're going to have difficulty finding instructors who speak sufficient English for you to get a full understanding of the very important things you're going to need to learn, but who knows?
Cheers, 
William James Woodward 聳 Brazil Animator, 暗网禁区-blog Team
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