Well, sort of.
I was interested to see if my Go Pro (well, local variant) could pick up footage underwater in the local fishing harbour. I really didn't expect much as visibility is commonly measured in poops. Anyway, it kinda worked.
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This is v1. The bottom a-frame was to keep it steady and prevent spinning. The top had about 15 meters of twine that could be unfurled.
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When it finally descended it floated just below the surface. Quickly modded it with a boulder and v2 was born.
Like I said, poops.