I don't dive as often as I like, not great diving at home, cold mountain lakes with random steamboat wrecks to dive, pretty much just practice here and work on adv certs. Finished up my rescue diver cert this summer. I was lucky this year and dove the Bahama's in the spring and Dominican republic in oct. I have also dove in Cancun as well.
That was filmed with a GoPro Hero3 Black Edition @ 720p 120fps. You can ramp it up to 4kp15 for cinematic quality but battery life suffers. I use it for mountain biking, snowboarding, rock climbing, and all the other stupid stuff I do.
http://gopro.com/cameras/hd-hero3-black-edition