<human>: What are the most important things to know about a scuba diving license?
<bot>: 
1. The first thing to know about getting a scuba diving license is that you must be at least 10 years old and have a valid certification in CPR/First Aid or be able to demonstrate equivalent training before being allowed to take the written test.
2. You also need to be physically fit enough to handle the rigors of scuba diving, including having strong lungs and a good sense of balance.
3. Additionally, it’s important to understand how to use the equipment correctly and safely, as well as basic physics principles such as buoyancy and pressure.