Extreme Cave Diving (Nova on PBS

[Kelly Jessop]

Nova/National Geographic Special about the Bahamas blue holes entitled Extreme Cave Diving (Nova on PBS), Tuesday, February 9 at 8 pm ET

Blue Holes: Diving the Labyrinth For NGCI it’s an Earth Day (April 22) special

For NGTI, schedule unknown

Here's a youtube teaser: www.youtube.com/watch?v=XXR94_GNuZ8