Ok, so it's not yet for rent for your next Caribbean vacation, but it's an interesting way to travel, nonetheless. Authorities were alerted when someone spotted three plastic pipes moving through Pacific waters 103 miles off the coast of Costa Rica this weekend.

They found four men inside a 50-foot, wood-and-fiberglass homemade submarine. Oh, did we mention it had three tons of cocaine in it? It's not the first time, either. In March, Columbian navy ships stopped a 60-footer. And back in 2000, Columbian authorities found a 100-footer, under construction. Apparently, the subs are used to rendezvous with speedboats that do most of the transport work between drug sellers and buyers.

Unfortunately, it doesn't appear that the sub had a glass bottom for sealife viewing.

Filed under: North America, South America, Costa Rica