PADI IDC - Diving and the environment - Water movement
Lots of questions on the PADI Instructor Exams about Tides, Waves, Rip currents and the Coriolis effect. See this video for more help.
If you like it, you can buy me a coffee - I'm gasping for some caffeine!
If you're studying for your PADI IDC or PADI IE, I give lots (and lots, oh! and lots) of advice here.