Barrier Reef — Season 1, Episode 31: The Tunnel
Drama • 30 min • 1 season, 39 episodes
Episode synopsis
When the roof of a cave below the Great Barrier Reef collapses and traps one of the Minus Five divers, the others have to work against time to rescue him.
About Barrier Reef
Barrier Reef was an Australian television series that was first screened in 1971. Barrier Reef centred around a group of marine biologists on board a ship called the New Endeavour, researching around the Great Barrier Reef, off Queensland, Australia. "It was the first series in the world to feature extensive colour underwater filming on location". It was also a unique location for a TV show. The Great Barrier Reef is "The only living organic collective visible from Earth's orbit."