The next step to expanding your knowledge and experience as a diver is PADI's Rescue Diver course.

Prerequisites:
PADI Advanced Open Water Diver certification or qualifying equivalent

PADI Rescue Diver

What it takes:
Successful completion of Emergency First Response or a sanctioned program in CPR and first aid within the past two years.
Learn skills that help you perform diver assists and rescues, manage dive accident situations and render first aid.
Confined Water Dives Not required, but many instructors include one practice session before heading to open water.
Open Water training Master the training exercises and rescue scenarios.