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What are the most important things to know about a scuba diving certification course?
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1.  The most important thing to know when considering a scuba diving certification course is that it can be an exciting and rewarding experience, but it also involves risks.
2.  It's important to make sure you have all the necessary equipment before starting your training, including a dive computer, mask, snorkel, fins, and regulator.
3.  You should also consider the type of certification you want to pursue.