Very cool. I used to enjoy freediving off the so. cal. channel islands, you can see an awful lot at minimal depth.
"A teacher is never a giver of truth; he is a guide, a pointer to the truth that each student must find for himself." - Bruce Lee
SCUBA airlines are 13 mm but the air is under pressure.
After a heap of testing it just feels right to have a large diameter air pipe , there’s no breathing resistance with the diameter over 20mm. It’s a hostile environment being underwater, no need to make it more difficult.
Using a length of 4 metres is long enough to trail behind without tangling with your flippers yet long enough to satisfy most reef diving. Could try a longer section but it works fine as it is.
There’s something to be said for underwater meditation, just calmly resting in the water watching the fish swim by.
Can a splash of water make it down that tube?
The surface float and post are designed to keep water out of the tube but lately I’ve added a cap to newer versions so that splash or rain can’t enter the tube. Or have a seagull land on the pipe and block the air.
The right hand version has flouroescent tape so I can go out at dawn or dusk and the post glows green above the water. I’ve spooked a few surfers who didn’t see the float before I popped up next to them. They couldn’t see the float but heard something big surface next to them.
I think this could have some stealthy military application, a whole team of people moving or lurking unseen under the water.
Good thing it wasnt Mick, he woulda started whalin' on you!
Just had 2 Aussies bitten by a great white.
One guy got out and went to hospital and the other guy went back in and got bitten after he knew there had just been an attack moments before. He deserved to get bitten.
wow, be careful out there amigo!