NOVA

Extreme Cave Diving

Season 37 Episode 5 | 52m 52s Video has closed captioning.

Scientists journey into one of Earth's most dangerous and beautiful underwater frontiers.

Aired: 02/08/10

Expired: 12/15/15

Rating: TV-PG

Problems Playing Video? | Closed Captioning

Original funding provided by Exxon Mobil, Pacific Life, the David H. Koch Fund for Science, HHMI, the Corporation for Public Broadcasting, PBS Stations

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