That's quite an outfit you are wearing. Not like a single bottle on your back and a mask and flippers like in the old days.
I was watching a documentary on the History channel this weekend, about diving on the
HMHS Britannic (Sister ship to Titanic) in the Mediterranean in 400+ feet of water. Half hour on the wreck..and Five hours decompression coming up. Amazing stuff.
NB
http://en.wikipedia.org/wiki/RMS_Britanic