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Well, The Sun is one of the worst pieces of crap ever to come off a printing press so this story is hardly surprising. Fortunately, no-one who buys The Sun can actually read so it's unlikely to cause any problems.

Funny thing is there's always fewer accidents on Friday 13th because so many people take extra care.

Because we've managed to make them all pretty much extinct. If you actually see a shark you should count yourself lucky.

That misses the compressibility of the wetsuit issue. You need to be able to be neutral at the end of the dive with empty tanks at 3m, this means you will be overweighted at the start of the dive (when you hit bottom) by the weight of the gas plus the buoyancy loss from your wetsuit. That's the...

That's a good one - the only time I got wet in my new drysuit was when I got some clothing caught under the wrist seal. Now I check the seals carefully after putting the suit on to make sure there is nothing trapped under there. Other than that, provided the seals have been correctly sized...

This is one of the weird things with the DSAT course: they seem to want bottle markings with gas mix, max depth, diver name, fill date, filler name, name of fillers pets, weather duing fill, type of analyser used, favourite colour, etc. The deco bottle needs just the max. depth in great big...

Actually, looking again at the material we were doing the calcs with single tanks, not doubles. Steel doubles is probably pushing it. Maybe with an aluminium backplate and no primary light it might be possible to get a sensible rig but otherwise difficult.

Practice buoyancy and trim.

I think the whole "balanced rig" thing is a bit overdone. The (DIR) reasoning behind the balanced rig is that you can swim it up in the event of a buoyancy device failure. If you run the numbers (even using GUE's course material) you actually find that steel doubles are often a better choice...

No, I think adults can make their own decisions. Except for people who would buy scuba gear without learning to dive - they are clearly too stupid to be allowed to make their own decisions :)

Do you have some reasoning to go with that suggestion?

I'd be tempted to use nitrox for the longest dives. If you're doing multi-day diving it's the slowest tissues which theoretically become problematic. These tissues take up nitrogen more in long shallow dives than short deep ones. So, if you're basically diving air profiles but want nitrox for...

It's my log book and I'll write what I like in it. If I've done something interesting and want to log it I will. I've also logged dives in a similar pool but only 10m deep. I've even logged a dive in a 3m deep aquarium.

Not only that, but they are one of the biggest sinks of CO2. They don't produce oxygen from nothing! They break down CO2 in the atmosphere to produce O2 - the C they keep for their own purposes... If we lost the algae the level of CO2 would increase much more rapidly than even now.

Provided you managed to screw it in all the way with your fingers it should be OK. It's the O-ring that makes the seal, not the tightness of the bolt. You only need to tighten it enough to make sure it doesn't fall out.

A Tech3/Cave3 diver is trained not to dive EAN28 ;)

Depends on how you feel about it. In a world where people seem to be wetting themselves about terrorism which seems to have a risk of less than 0.001% then I'd say a risk of 1 - 2% is significant.

Did you know you made the national press in the UK with that quote? Fears grow for British divers missing off Bali | UK news | The Guardian

Yeah - for the basic nitrox course the agency really doesn't matter - the information isn't that complex and they pretty much all say the same thing. I'd actually be tempted to go with PADI because of the quality of their course material. You get a nice book, DVD and tables which you then have...

I wouldn't be so sure that's the right way to go. Don't forget, there's a significant risk (maybe 1 - 2%) of serious complications from surgery. Then there is the very difficult rehabilitation period and the chance that the joint may end up worse than in the beginning. I was offered a full...