Fun YouTube search

bait car.

Beats watching "Cops" on TV.

CNN's Lost World of Muin

CNN has video of divers exploring some large underwater structures recently found off the coast of Japan.

The video is titled "the Lost World of Muin" or something like that.

Since there didn't seem to be much on either the word "Muin" or other search terms I tried, I looked around a bit more and eventually found this interesting page about possibly similar ruins off Okinawa.