Man, they had some great visibility to shoot this with.

Trying to do this right now myself, but instead of submarine, just trying to design and build a sailboat from a mix of preexisting boating materials and my own designs. Probably won't get as far as he did. This is good stuff (even if it looks like a watery coffin).

If he built some mechanism to hold the bubbles, and make the tail fin pedal-powered, this would be a great stealth vehicle. So small that sonar would think it's just a shark or dolphin.

*music

Adding video to channels (Music) - requested by ant.

The one time the down under channel might mean something different!

Innovation for South American drug cartels. Doing God's own work right here.

I'd like to know more about the boat. No horizontal fins, how's he controlling depth? Looks a lot of fun though, and I like the propulsion with a tail rather than a prop.

Yeah, not as good for drug smuggling as you would think. The coasties have been on the lookout for these things for quite awhile. Ping........ping.....ping........caught.

Flooding and evacuating ballast tanks around a neutral buoyancy and the shape of the hull. He goes like half the speed a diver can swim at, so there's not a lot fins would do to help anyway. Probably slow him down even further due to drag, to be quite honest.

Doesn't look like this thing would be capable of going very deep without imploding. Seems like it would be easier (and safer) just to go scuba diving.