Get your SDI Open Water Scuba Diver certification
Start diving the world in 3 easy steps
You saw on TV the beauty of tropical oceans and dreamed about exploring this amazing underwaterworld? Your dreams come true with the SDI Open Water Scuba Diver!
The SDI Open Water Scuba Diver course makes it possible for you to complete all of the academic requirements for your entry-level scuba diver certification online. You can get started right now and, when you are done, you will then complete your in-water skill-development sessions and final open-water training dives with me in Mexico or any other SDI dive center in the world. It’s that simple! Now, go dive the world with your SDI certification.
The 3 Steps to become an SDI Open Water Scuba Diver
Get Smart
Get Smart
Elearning
Start your SDI Open Water Scuba Diver course and master all the important academic information online. You can complete this phase through self-study, at your own pace, in the convenience of your home or office. All eLearning courses work on mobile and tablet devices too.
Get Wet
Get Wet
POOL
For entry-level certification courses (as well as some continuing-education classes), the next step will be to complete your in-water skill-development training. This takes place in a swimming pool or similar body of confined water, under the supervision of an SDI Instructor.
Go Diving
Go Diving
open water
The final step is to complete the required number of SDI open-water training dives under the supervision of your SDI Instructor. Here you will apply what you have learned during your academic and skill-development sessions, while learning practical lessons that can only be gained through real-world experience in open water.
Learn to Dive with SDI’s Open Water Scuba Diver Course

Who this course is for:
Course prerequisites
See Junior Open Water Scuba Diver Course here. (10 – 14 years old)
What you can expect to learn:
The SDI Open Water Scuba Diver Course will cover all of the necessary skills and knowledge for open water scuba diving, including:
What’s in it for you:
Upon successful completion of the SDI Open Water Scuba Diver course, graduates may:
SDI Open Water Scuba Diver minimum requirements:
How do I take this course?
If you want to start elearning now but you are not sure when and where you can attend the practical training, click here
If you want to make a reservation with me for your full course on a certain date and also start elearning, click here
Testimonials
On recommendation of a friend, we contacted Tillmann. It was important to us to have our first diving experience with an experienced instructor who also speaks our language. We were not disappointed. With a lot of patience and humor he explained to us how everything works and also took our son (15) the fear of open water. We also experienced dives in a cenote. For us it is clear that the next vacation will be a diving vacation.
Sabine, Germany
On my first trip to Mexico with a good friend that was doing an underwater filming project, I was recommended to get my diving license with Tillmann. Excellent instructor, very friendly, competent and helpful. I was lucky enough to have private lessons and was extremely happy. I can definitely recommend Tillmann!
Severin, Germany
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