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I'm surprised to see this go unanswered (or maybe I just missed it due to my mobile viewing). If you always use the same capacity cylinders, it really doesn't matter whether you think in volumetric units (CF for Imperial, Liters for SI) or pressure units (PSI for Imperial, BAR for SI). However...

*Air* has an oxygen partial pressure of .21ATM at sea level.

In my neck if the woods it's not uncommon for boat captains to drop anchor a distance from the site greater than maximum visibility (generally an effort to prevent it from getting stuck in the wreck). In the more barren areas, it may be sitting in sand. In those cases, I have no issue tying...

If you just want to learn to dive, why are you worried about the cost of becoming a dive professional (dive master)? Just learn to dive and enjoy it. Come on, be fair. "Expensive" is relative to what one can afford. It's easy to name activities that dwarf the cost of horse riding or night...

The mola molas seemed shuffled.

Rainer used some creative license with the sequence, but yes, a good portion of the video was at that level. Somewhere around minute 2 you see us ascend through the next shallower cross beams. You'll see much the same stuff. As was mentioned in the OP, sometimes the visibility is better deep...

Correct. :P Never looked. Felt like low 50s.

Awesome video. Was a great trip. Never come up under the rig and had to worry about bonking my head on the bottom of the platform before!

In these photos, my AL6 is rigged as TSandM described:

Put in a request to dive at the rookery. If the other passengers are willing, it's a really fun dive. 9YFlxAZJboQ&sns=em

The northern islands (anacapa etc) probably offer better diving than Catalina on average. Since you're boat diving, Anacapa would get my vote all else being equal. But where you staying can make a big difference too. If you're near the Catalina charters (LA area), go there. If you're near the...

IMO, Anacapa won't be significantly different than Catalina. San Diego will be, particularly if you dive any of its many wrecks (the best of which aren't in wreck alley...)

Took the big dive into parenthood, so not many. Hopefully fewer than I'll make in 2012.

Croatia. http://www.visit-croatia.co.uk/plitvicelakes/

It's very beautiful on average, but this is the most gorgeous spot I've ever been to:

Lucky daughter. The water is warm and clear. There are thousands of cute little blacktip reef sharks, as well as a host of tropical fish. Aside from that, there isn't really a whole lot to *DO* there (in fairness, I was honeymooning, so perhaps I wasn't as focused on getting out and finding...

There are of course more meanings to "streamlining" than specifically with respect to fluid dynamics. Business leaders often talk about streamlining processes, for example. 1b, 1c and 3 can clearly apply to scuba diving. 1a can as well, though yes you're unlikely to come up with a...

haha I figured I'd hear about my timing. I found it the very first time I logged in since it was started :P

Situational awareness.

Glad they caught them. Sadly it looks like many of them have lost their antennae.