How to make decent underwater videos with a GoPro

I make a lot of underwater videos and I've been asked to share how I do it!
This is a short instructional video about underwater videography. I've [put a few short video clips at the end demonstrating video with filter, with no filter but lights and with lights and macro lens. If you'd like to see some of my videos then check out my YouTube channel Gerry Green Diving.

Видео How to make decent underwater videos with a GoPro канала Gerry Green