It appears so from a FB page for the same name and city: Dennis Price
Well damn. He was a good dude. I don’t know who his buddy was that day, but when I dove with them, they would always go off on their own. That bothered me, so I hadn’t dove with him in a long time. We would come up to look for them and of course you couldn’t see bubbles.
I know they liked to play tricks too. I won’t get into that.
He did have a homemade rebreather BUT it was a modified one. One of them had a dolphin? I remember him showing me his setup. I don’t know much about rebreathers but I did know he had multiple sensors and some of them made audible noises if o2 was low, etc.
Just speculation, but they probably went down together, got away from each other, and then something happened.
Dennis used to be part owner of airheads scuba and taught technical diving.
The only true homemade device they had was a bailout rebreather made of pvc pipe.
J