I know this is a g5 sub, but honestly I wouldn't risk it. Everyone and their mother makes adventure cams now. I'd hop on Amazon and grab a 3rd party action cam with the waterproof housing and mounts.

Edit: something like this maybe... AEDILYS 4K WIFI Sports Action Camera Ultra HD Waterproof DV Camcorder 12MP 170 Degree Wide Angle 2 inch LCD Screen / 2.4G Remote Control-Black https://www.amazon.com/dp/B01MYMLW3G/ref=cm_sw_r_cp_apa_1oFtyb44RJB2Y. There are cheaper ones but this seemed like a decent kit for an affordable price.