nice portraits!
actually, I don't have a case for my SLR. I have another camera that I use underwater. it's a sealife DC500. 5MP PnS camera with an external strobe. I really want a housing for my SLR, but they are like $1300, and I'm planning on upgrading to the 50d soon anyway... maybe I'll get a case for that.
that dive was probably about 80 feet. Honestly, I never look at my depth anymore. I only watch my tank pressure, and sometimes the temperature when it feels really cold. I've been diving for 3 years and I am open water, advanced open water, nitrox, and rescue diver certified! Just one more of my expensive hobbies. I do like how diving and photography over lap though.