This is a small area that's been taken care of for years; and, has a history of cave divers doing this small water area, with a death in the outcome. Check the history of it on the Internet. But, first read this ugly story of three guys who were feeling their oats and what's being offered for finding and turning them in.
I'm speechless after watching the video. I hope never find myself in this situation when I'm cave diving ! If someone can send to me a copy of this cave map ? I'm curious to see what this cave looks like to shake as much of water. I only find a schematic map on the web.