It's titled PADI Advanced Open Water Diver because it advances your diving knowledge & skills.
Advanced Open Water

The PADI Advanced Open Water Diver is designed to improve your underwater knowledge and skills. You can enroll immediately after earning your PADI Open Water Diver certification regardless of your skill level. The course helps you build confidence in navigation, fine-tune buoyancy skills and introduces you to different diving activities such as wreck diving, night diving or underwater imaging. You’ll plan your learning path with your instructor by choosing from a long list of Adventure Dives. There are two required dives – Deep and Underwater Navigation – and you choose the other three, for a total of five dives. During the Deep Adventure Dive, you learn how to plan dives to deal with the physiological effects and challenges of deeper scuba diving. The Underwater Navigation Adventure Dive refines your compass navigation skills and helps you better navigate using kick-cycles, visual landmarks and time. The other knowledge and skills you get vary with your interest and the adventures you have – photography, buoyancy control, fish identification, exploring wrecks and many more.

PADI
TDI
BSAC