Members of the Woodville Karst Plain Project are the stars of a documentary focusing on cave diving that is airing this fall on Japanese television. A production crew from NHK, which is Japan's version of public television, spent 2-1/2 months collecting more than 100 hours video of WKPP members at North Florida's Wakulla Springs cave system. As part of the project, videographers Kazuhiro Sato and Hideo Kihara underwent rigorous training in cave diving. They also spent $30,000 on a video camera housing that allowed them to shoot footage at depths down to 300 feet inside the cave system.The WKPP crew is best known for making the longest continuous penetration of an underwater cave. Every WKPP diver must undergo extensive training and conform to strict protocols. Since these requirements were imposed under project director George Irvine's leadership, no fatalities have occurred during thousands of dives into some of the world's most challenging cave systems.