1998 was designated 'International Year of the Oceans'. It turned out to be the year that coral reefs around the world began to die. Unprecedented mass bleaching swept the world's tropical oceans, in places leaving hundreds of miles of coral coastline - the fringes of entire countries in places - severely damaged. Following a number of similar but lesser events since the 1980s, this latest bleaching event is being touted as unequivocal proof that global warming has begun, and that it will have a greater impact than many think.

This program reveals disturbing evidence that even if coral can survive continually rising temperatures, they won't be able to escape the chemical effects of high levels of carbon dioxide in the atmosphere. Experiments in Arizona's Biosphere II show that as the ocean is becoming more acidic, corals will grow more slowly and with weaker skeletons.

SILENT SENTINELS examines these claims and takes a step back to take a broader look at the coral organism and how it has coped with climate change over time. How coral both defines its environment and is created by it. It is a story of a polyp and a plant - one of the most successful biological relationships in the history of the earth.

SILENT SENTINELS was filmed in three oceans, on the Great Barrier Reef in Australia, and remote Scott Reef in the Indian Ocean, in the Maldives, the Red Sea, the USA and the Caribbean.

SPECIAL OFFER: SILENT SENTINELS was produced with a companion film called The Perils of Plectropomus, which details the life and death struggles of fish on a coral reef today. You save $105 or 21% if you buy both films together. To do so, please order under Special Offers.



Grade Level: 7-12, College, Adult
US Release Date: 2000     Copyright Date: 1999
DVD ISBN: 1-59458-511-3     VHS ISBN: 1-56029-814-6

Reviews "This is the most important movie on global warming to date...Has a much stronger impact than any written report." Rafe Pomerance, key US global warming negotiator, former Deputy Asst. Secretary of State for Environment and Development "Drawing connections between the biological processes of life and death in the reef ecosystem with climate patterns, the viewer directly experiences the evidence that has convinced the scientific community that global warming is having significant impacts on coral reefs...Silent Sentinels combines the dire predictions of the future with strategies for staving off massive disaster, making it an important film for anyone concerned with the marine environment." Stuart Sandin, Coral Reef Ecologist, Princeton University "A comprehensive introduction to this subject that is both understandable to the layman and sufficiently penetrating to interest the professional." Steve Coles, Bishop Museum, Honolulu "Excellent program...Highly recommended for earth science and ecology classes." Booklist "Excellent...make(s) a compelling case that action is urgently needed to respond to global change, above all climate change...I strongly believe we will only have governments act when their citizenry is well enough informed and pressing for action...A significant contribution. It is important (it) be widely viewed." Gordon Smith, Director of the Centre for Global Studies, University of Victoria "An essential film for scientists and students of all grade levels who want to understand the critical impacts global warming is having of one of the earth's most biologically diverse, climatically sensitive ecosystems...Watching this film will put to rest any disagreement that rising global temperatures are killing tropical coral reefs." James M. Cervino, Marine Biologist, University of South Carolina "Science is one of the few human endeavors that still depends primarily on the printed word for reporting...The power of near-real-time satellite data to produce testable predictions of the location and intensity of coral bleaching is particularly well presented with computer graphic 'movies' of evolving hotspots. The message simply could not be as well presented in any other medium...In summary, the quality of the science presented in Silent Sentinels approximates that of the work done by the scientists it features: i.e. a very high standard." Bruce G. Hatcher, Dept. of Biology, Dalhousie University "There are literally dozens of videos available that relate to coral reefs, but Silent Sentinels...belongs in every school, college and public library. It is an excellent educational film...and it is very highly recommended." Barbara Butler, Oregon Institute of Marine Biology, MC Journal "This is an outstanding film." David M. Anderson, Institute for Arctic and Alpine Research, University of Colorado