As the sun sets, you don your dive gear, slip on your mask and bite down on your regulator. A deep breath and you step off the boat - into the underwater night. Although you've seen this reef many times before, this time you drop into a whole new world and watch it come to life under the glow of your dive light.

The adventure, thrill and excitement of night diving can be yours when you complete your PADI Night Diver Specialty course. You learn about night dive planning, equipment and navigation. You practice these on three night dives, plus introduce yourself to the whole new cast of critters that comes out after the sun goes down.

In this course, you learn how to plan dives that extend your bottom time by crediting you for slower nitrogen absorption when you ascend to a shallower depth. That's the way you really dive, after all. You'll learn to use The Wheel TM version of the RDP for planning multilevel dives, making it a great companion for your dive computer (as well as a way to make multilevel dives if you forget to bring your computer).

• Entries, exits and navigation at night
• Nocturnal aquatic life
• Communication and light handling