This is funny. Some guy with no training, no experience, no funding, no anything but a desire built himself a deep sea submarine, did it, is now cruising around as deep as 2100 feet below the surface in his homemade submarine.
Interviewer:
"How do you test that design?"
Stanley:
"Take it down. That's the cheapest option."
In one of the videos on the bottom of the ocean, Stanley has a fish tied to a pole and attracts a gill shark...with the Jaws music in the video.
See the videos (some with Led Zeppelin, Pink Floyd, and Jaws soundtrack) here:
http://www.stanleysubmarines.com/