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in an emergency swimming ascent, as you get shallower you may get an extra breath, which is one reason for keeping your reg in your mouth. Where does that extra breath come from? expansion of the air in the hose; it doesn't seem like there would be enough air in the hose to amount to a partial...

I live in Reno, NV, altitude 4500 feet and dive in Lake Tahoe, altitude 6200 feet. I use a Petrel and an Oceanic PP2. Both computers automatically adjust for altitude diving as long as you turn them on before diving so they can measure atmospheric pressure before the dive begins. But neither...

I have a "medium" sized head/face, so "regular" size masks don't fit me. I bought an Atomic Venom ARC and the glass is great, but it leaks like a sieve. I have a cheap mask that fits my face with crappy glass. Is it possible to have someone take the glass out of one mask and fit it into another...

Went diving at Lake Tahoe last weekend and at the end of the second fairly short dive, surfaced and starting vomiting before I could even get my gear off. We did our first dive, lasted about 40 minutes and went down to about 60 feet. When we got back to shore and I stood up I felt dizzy and...

My neck shrank so I had to replace my neck zipseal. It's a DUI latex zipseal trimmed to between the 6th and 7th line. According to the directions that is for a 15in neck (I like it snug and had a 16 inch neck when I trimmed it. It's 5 years old, shows no sign of deterioration, tearing, etc. etc...

A couple of weeks ago a friend and I changed the propellers on a friends boat while it was in the water. Since it was shallow enough that I could almost stand on the bottom (turns out, not quite) I thought I'd be better off without fins. It all worked out fine, but I was really surprised that I...

I have a housing for a nikon F5 - a film camera - I know what your thinking, why did I get a housing for a film camera. I don't know either. My question is can I adapt the housing to fit my nikon D1X digital camera? Thanks.

I had an issue with my Xstream regulator and octopus. they both started free flowing at the end of a dive. They started when I had about 600 psi left in the tank. My wife was also using an Xstream reg and octo, was at a similar depth and similar tank pressure and her regs worked fine. I was at...

Yesterday at the end of a dive my reg and alt (both Posiedon Xstream) started free flowing. We were just about to surface, I was probably 4 or 5 feet down, tank pressure was down to about 600 psi and away they went. I surfaced, manually filled my BC and had my buddy shut the tank valve. My...

Fortunately, this as an incident, and not an accident, because I'm the incidentee. I'll describe the incident as accurately as I can and let's see if you pick up what neither my instructor, my wife nor I figured out at the time. Situation: My wife and I show up at a dive shop and ask about...

I just looked at my friends list and it said zero? What's up with that? I've been a member for all of about 10 minutes. Why no friends? You guys standoffish or what? Actually, if anyone has any experience diving off a sailboat I'd love to hear about your experience. I have a sailboat in San Fran...