Advanced Open Water Diver 
The SEI Advanced Open Water Diver course is for divers who want to expand their knowledge and diving experience to include a variety of diving environments. The course provides an introduction to specialty diving, and features five open water dives, including a night dive. This course is highly recommended for all newly certified Open Water divers, to help them gain experience and comfort in the underwater world.
Advanced Plus Open Water Diver
This course includes additional classroom training and adds ten additional dives to the diver's experience. Open water diving is the primary objective of this course with classroom training designed to augment the knowledge presented to Open Water divers.
Previous Level: Open Water Plus Diver
Next Level: Master Scuba Diver
Optional Courses: Specialty Courses
