If you're not sure which specialty to choose, choose the SSI Advanced Open Water Diver program! You'll learn about deep diving and navigation, plus a choice of three other specialties, before committing to a full course. It's the ideal way to familiarize yourself with advanced diver training and its importance for your underwater adventures. During the Advanced Open Water Diver program, you'll explore five different specialties by doing a training dive in the open water for each specialty, after a full briefing with your SSI instructor. This program gives you total freedom of exploration. You'll be able to take full specialty courses at a later date, and use your Advanced Open Water Diver training to gain access to them.