<human>: What are the most important things to know about a scuba diving license?
<bot>: 
1. The most important thing to know about a scuba diving license is that it allows you to dive in a controlled environment with trained professionals who can help if something goes wrong.
2. You should also be aware of the laws and regulations surrounding scuba diving, as well as any local restrictions or requirements for obtaining a license.
3. Additionally, it's important to familiarize yourself with the equipment needed for diving, including your mask, snorkel, fins, and regulator.
4. It's also essential to understand how to use the equipment properly and safely before going underwater.