The Octo blog
In short
Articles for student divers and future dive professionals: the Open Water questions people get wrong, how hard divemaster theory is, metric versus imperial math, six safety myths and what memory research says about keeping theory fresh.
Each article takes a question divers ask during training and answers it with sources you can check, from Divers Alert Network and NOAA to published memory research, then tells you what to practice next.
- 6 dive theory myths, and what’s actually trueSix dive theory myths that put divers at risk, from no-decompression limits and nitrox to narcosis and flying after diving, checked against DAN and NOAA.
- How hard is divemaster theory? An honest answerHow hard is divemaster theory? What it covers, from gas laws to decompression models, why the math trips people up, and how to prepare without cramming.
- Metric vs imperial dive math: bar vs psi, meters vs feetMetric vs imperial dive math: bar vs psi, meters vs feet, liters vs cubic feet, the same calculations worked in both systems, and the unit traps to avoid.
- The Open Water theory questions new divers get wrongSix Open Water theory questions where the wrong answer sounds right: pressure, held breaths, equalizing, NDL, thumbs up and lost buddies, explained.
- Why you forget dive theory (and how to make it stick)Why you forget dive theory: the forgetting curve, what research says about self-testing and spaced review, and how to make your scuba theory stick.
