Follow Dr. Kenny Broad as he dives into underwater caves that formed during the last ice age when sea level was nearly 400 feet below what it is today. They are Earth's least explored and perhaps most dangerous frontiers. With an interdisciplinary team of climatologists, paleontologists and anthropologists, Broad investigates the history of Earth's climate as revealed in this spectacularly beautiful alternate universe.
B**N
Extremely Interesting
One of the better NOVA documentaries I've seen in recent times. This one examines the phenomenon of blue holes, shows you the perils of cave diving and how birds and other land animals used to live in these things millions of years ago before climate change / rising sea levels whatever. You wouldn't think these holes would be archeological gold mines for the scientific community but they are and they're quite dangerous. Experienced divers get lost and die in them every year.
T**Z
Did Not skip
Good condition
C**S
Blue hole wonders
Tasty dvd of totally cool diving and informative as well. HD cameras continue to impress me.. Corey
G**R
Five Stars
AWESOME - ABSOLUTELY AWESOME
B**R
great service
Good
S**D
Five Stars
Excellent
L**A
dissapointed customer
I wasn't very impressed as I bought this expecting to beable to watch it on my DVD player. I didn't read that it was an American import so am unable to watch it at home in the UK. I feel that amazon shouldn't have been able to sell it in the UK or at least have something written to make sure that anyone buying this product knows that they won't beable to play it on UK DVD players. So I have no idea about what its content is as like iv said I'm not able to watchit. I'm very dissapointed along with my husband whose a diving instructor expecting to watch it
