The Theory of Recreational Scuba Diving: Prepare for Your Dive Professional Exam, Be an Informed Recreational Scuba Diver

We wrote this book to help you understand what is happening and why it happens before, during, and after a dive. Many of you will be preparing for an exam to become a dive professional. This is book tells you all you need to know, no more, no less. We will start off easy with a short introduction to the dive environment, where we look at tides, currents, waves, coasts, ecosystems. Why are there usually two tides per day, but only one Moon? Why do currents follow a certain pattern over the g...