"Extreme Cave Diving" follows a fearless team of scientists as they venture into blue holes-underwater caves that formed during the last ice age, when sea level was nearly 400 feet below what it is today. These caves, little-known treasures of the Bahamas, are one of Earth's least explored and perhaps most dangerous frontiers. The interdisciplinary team of biologists, climatologists, and anthropologists, led by renowned cave explorer Kenny Broad, discover intriguing evidence of the earliest human inhabitants of the islands, find animals seen nowhere else on Earth, and recover a remarkable record of the planet's climate. The stakes are high as the scientists swim hundreds of feet through narrow, dark passages that have trapped andhuged divers in the past, but the scientific payoff is considerable.

NOVA Season 37 Episodes...

• s37e01 - Darwin's Darkest Hour
• s37e02 - Hubble's Amazing Rescue
• s37e03 - Lizard Kings
• s37e04 - Becoming Human Part 1: First Steps
• s37e05 - Becoming Human Part 2: Birth of Humanity
• s37e06 - Becoming Human Part 3: Last Human Standing
• s37e07 - What Are Dreams?
• s37e08 - What Darwin Never Knew
• s37e09 - Killer Subs in Pearl Harbor
• s37e10 - Building Pharaoh's Ship
• s37e11 - Riddles of the Sphinx
• s37e12 - Ghosts of Machu Picchu
• s37e13 - Extreme Cave Diving
• s37e14 - The Pluto Files
• s37e15 - Telescope: Hunting the Edge of Space - The Mystery of the Milky Way
• s37e16 - Telescope: Hunting the Edge of Space - The Ever Expanding Universe
• s37e17 - Mind Over Money
• s37e18 - Mt. St. Helens Back From the Dead

NOVA Show Summary

Seen in more than 100 countries, NOVA is the most watched science based television series in the world and the most watched documentary series on PBS. It is also one of television's most acclaimed series, having won many major television awards, most of them many times over.