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In my experience, the answer is "it depends." If you are shooting macro, then the light is close enough to the subject that you don't need the filter. On the other hand, if the subject is larger and a few feet away, then sometimes the red filter helps. Viewfinders are helpful in deciding...

I am a somewhat experienced underwater videographer, and I still like my Canon camera with the L&M Housing. However, it is simply getting to be too much of a hassle to travel with the bigger rig. Consequently, I may be making the jump to GoPro. I bought the book thinking it might save me some...

Very nice

Nice photos! Wish I could be there to take a peek, too. But had to work this weekend. There has definitely been plenty of shifting and sliding even in the few short years I have been diving there. Even if I was cave certified, I'd be nervous to go in there. But maybe these guys will prove that...

For SB readers who haven't been to the Blue Hole in Santa Rosa, here is a video that I made when I was trying out my new video equipment. You can see the grate at about 5:15. We put a piece of moss into the grate so that you can see the water flowing up and out from the hole. There is a quick...

I wonder if they will prohibit jumping from the cliffs while the team is diving. I have been at the grate while the "jumpers" are active, and actually felt shock waves from people jumping into the water above. And haven't we all noticed more "slides" along the walls and cave-ins at the grate...

Having given your questions more consideration, I may have misunderstood what you were asking. 1. Given the parameters of the dives that you specified, then yes, the Nitrox dive will take longer to reach the NDL, but once you have reached it, the total nitrogen loaded will be the same as the...

I agree completely. As I read the OP, it seems to conflate narcosis with nitrogen loading and the risk of DCS. Another way to think of it is this: narcosis happens when you are loading nitrogen, and DCS happens when you are off-loading nitrogen. No-decompression limits (NDLs) are our way of...

Why not?

Wherever you choose, be sure to tell the operator that you are new to the ocean, and tell them that you want to ease into things. I agree that going with a local divemaster is a good idea. An operation like Dressel (at the Iberostar in Cozumel) is good for beginners because all their dive...

If you have an iPhone, this is a pretty handy little app.

That's what my Sherwood computers do. When I spoke with their tech folks, they referred me to the articles mention previously, leading me to believe that you got credit for any time out of the water. But when we tracked our cumulative oxygen percentages, we found that the percent exposure would...

Neither do I. But it is fun to think through the issues since you are combining TWO activities, each with its own attendant risks.

A 500 ft change in altitude is equivalent to 6 inches change of depth in water.

CoopAir, I should add that I am obviously not a pilot, so my previous reply is not a comment on your flight plan. My point, rather than to speculate, was to try to answer your question about the risk of flying after diving using factual information from the NOAA diving manual. When I read...

The only way to get ZERO risk is to not dive. Acceptable risk is a judgment call... Using the NOAA Dive Table, an 80 ft dive for 25 min puts you in group F at the end of the dive. After a 45 min SI, you are still in Group F. The NDL for your 2nd dive to 40 ft would be 139 min. If you dive 50...

No kidding. I remember a "trust me" dive in Florida. We were diving with an operator who had been fine during the day. However, we were being taken to a site we had not dived before to do a night drift dive. The briefing went something like this: "There are four wrecks in a line. We will drop...

My favorite is what happened to my wife on our first trip to Cozumel. We were novice divers at the time, and we were traveling with our instructor and his wife. We were both still trying to figure out how to dive, so we were doubly impressed that our friends were not only great divers, but...

Our wives insisted that we stay at Atlantis (their TV advertising works). I cannot say that it is inexpensive, but it turns out that we really enjoyed it. The water park is fun, and they have several nice aquariums spread out in the various hotels in the complex. My favorite was the one that...

I appreciate it when people take the time to write reviews that help me plan trips. It does seem to be more difficult to get useful info about dive trip planning. Undercurrent, for example, may have reviews on a specific spot, but they are not always current. Same here on SB. Trip Advisor...