1 Read up. When possible, read anything you can about each new site you’ll be visiting before you arrive. That might help you have questions already formulated.
2 Know your destination. From info in the divemaster’s briefing, record key stats and draw a rough copy of the site on your dive slate so you can refer to it below.
3 What to expect. Making a note will help you remember to look out for unfamiliar species your DM discusses. Ask if the boat carries laminated fish ID pages or a critter book.
4 What to avoid. Pay attention to discussions of local restrictions and dangers — such as live ordnance on a WWII wreck, poisonous fish and overhead environments.
5 Reminders. Given that each dive site has its own unique attributes — and your life is potentially at stake — being reminded of even familiar signs and procedures is time well spent.
6 Questions. If you have questions about what you’ve heard, the briefing is the best time to get them answered — before you begin your descent!