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A passport to dive the globe
Imagine floating weightlessly like an astronaut, cruising with the currents among colourful fish, or exploring shipwrecks that sit like underwater museums. Scuba diving offers a world most people never get to see firsthand — and your SDI Open Water Scuba Diver certification is the key.
This certification opens a new realm of environmental awareness, adventure, and camaraderie. Divers share a passion that crosses every border — and yours starts right here in Cornwall.
"Scuba diving is not just another sport; it's a transformative experience that allows you to witness life under the waves — combinable with travel to some of the most beautiful destinations in the world."
For anyone with a sense of adventure
Persons wishing to receive a comprehensive introduction to scuba diving
Those interested in underwater exploration and marine life
Individuals looking for a new recreational activity full of excitement
Whether you're 15 or 65, the course is tailored to those with a love for the natural world. Younger enthusiasts aged 10–14 can join through the Junior Open Water Scuba Diver course.
Knowledge built for real diving
- 1 Understanding the Aquatic Environment Learn how vision, light, sound, and heat loss differ underwater, and how tides, currents, waves, and surge affect your dives.
- 2 Physics and Physiology Grasp the principles of buoyancy, pressure, air spaces, and the implications of breathing compressed air.
- 3 Equipment Mastery From selection and assembly to maintenance — learn to handle dive gear responsibly and confidently.
- 4 Dive Planning and Safety Underwater navigation, buddy systems, emergency procedures, and basic rescue techniques.
Three steps to certification
eLearning
Master the theory online at your own pace — interactive presentations and quizzes, whenever suits you.
Pool Training
Apply your knowledge in a controlled pool environment with your SDI instructor by your side.
Open Water
Head to open water for a series of dives — gear setup, buoyancy, safe ascents, and the real thing.