Seeking suggestions on trying to video record an SMB blowing up as it ascends

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If it's a small one, you can just hold it while you ascend at a normal pace. Easy to video. From 100 ft, fill 1/2 full so it is full at 33 ft and hopefully bursts before 15 ft.

(Obviously, use enough weight to resist the SMB lift that's easily ditched if necessary and/or have sufficient wing capacity.)
 
A freediver could dive down then pace the ascending bag with a camera ascending rapidly. Not sure if they would be fast enough, but maybe if the bag had a drogue to slow it down.
 
I have fully inflated a SMB and released it at depth. All they did was to fizz through all the pores in the coated fabric material.
 
Nemrod:
I have fully inflated a SMB and released it at depth. All they did was to fizz through all the pores in the coated fabric material.
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oh man, that is disappointing. That just kills my idea.
 
I once saw someone inflate an DSMB at Hornby Island during Stellar Sealion season. Now that was dramatic! The sealions tore that DSMB to shreds! Sorry, no video.
 
Maybe you could use some of the Divesoft dye marker inside the SMB.
 
re: Balloon idea

For a balloon, you could always measure the diameter at different depths (120ft, 90ft, 60ft, 30ft, 0ft). Use a cloth tape-measure; the kind often used in sewing. While balloons are often not perfectly spherical, you can still convert diameter into radius, and then into volume. Or ask me to do it, if you don't know how.
 
wetb4igetinthewater:
Actually I have an idea. Have a diver at the bottom letting up line slowly while I ascend with it filming.
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You could also do such a thing solo, using line you slowly release, and through a loop in an anchor acting sorta like a pulley. However, filming would definitely be easier with another diver.
 
Wookie:
I have an AP crack bottle DSMB I'll probably never use again. Attatch it to a 5 lb weight and crack the valve. You ascend and film the DSMB as it goes past.
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@Wookie WAT. If you wanna get rid of it, send it my way. I want one, but I don't want to spend the £175 plus international shipping.
 
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https://www.shearwater.com/products/perdix-ai/

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