16/10/2026
The SSI Science of Diving program is a fully theory-based ("dry") course designed to give you a deep understanding of the physics, physiology, and mechanics behind scuba diving. It is heavily focused on academic mastery rather than in-water skills.
Course Overview & Key Topics
The curriculum is split into five main academic sections:
* Diving Physics: How pressure, volume, and buoyancy change underwater.
* Diving Physiology: How breathing compressed air under pressure impacts the human body, gas exchange, and medical considerations.
* Decompression Theory: The science behind dive tables, nitrogen absorption, and how modern dive computers calculate your limits.
* The Aquatic Environment: Understanding ocean currents, tides, ecosystems, and underwater visibility.
* Diving Equipment: An in-depth look at how your life-support systems (regulators, cylinders, BCDs) function under the hood.
Course Specifications
Metric Details
Prerequisite : SSI Open Water Diver certification (or equivalent)
Minimum Age:10 years old
In-Water Session: None (100% classroom or online study) however we are here to help & review your final exam.
Duration: Roughly 8 to 12 hours of self-study and evaluation
Format:Completed digitally at your own pace via your SSI app
Use link below to purchase .
https://www.belowthesurface.co.uk/shop-courses-kit/ssi-courses