For over 500 million years, the jellyfish has survived in our oceans. Today, global warming and pollution may be contributing to a population explosion, as billions of these sometimes venomous creatures increasingly swarm around our beaches and shorelines. And though they have no bones, blood or brain, some jellyfish are armed with a deadly arsenal unlike any other on the planet. National Geographic dissects the fascinating physiology of this living fossil, from its 24 clustered eyes down to the tips of its stinging tentacles, and examines how man's impact on the environment may be creating a growing invasion.
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For the first time ever, National Geographic presents its programming in DVD-R format. Available exclusively through this site, you can now own more of our award-winning specials and documentaries in a high-quality DVD format.
How our DVDs and DVD-Rs Differ
Customers who purchase programs in the NG DVD Exclusives Library will receive a non-interactive, play only disc. There is no chaptering information on these DVDs, but there are chapter marks approximately every five minutes, which make it easy to fast forward through a program. The DVD-R format provides the digital video and audio quality you expect from all of our DVDs.
NOTE: The NG DVD Exclusives titles are not closed-captioned. We apologize for any inconvenience this limitation may cause.
Join renowned wildlife filmmakers Dereck and Beverly Joubert
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Circle the globe with National Geographic on an
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In the harsh northern reaches of Canada's Ellesmere
Island, elusive arctic wolves share their secrets with two patient observers. Shielded by their remote location and inhospitable climate, these wild animals have not yet learned to fear humans. This is the ...