Why a speeding shark is like a golf ball

Filed Under (Scuba News) by admin on 20-11-2008

Shortfin mako sharks can shoot through the ocean at up to 50 miles per hour (80 kilometres an hour). Now a trick that helps them to reach such speeds has been discovered - the sharks can raise their scales to create tiny wells across the surface of their skin, reducing drag like the dimples on a golf ball. Tiny vortices or whirlpools formed within the cavities between the scales. These vortices form a kind of “buffer layer” between the skin’s surface and the fast moving fluid, preventing a turbulent wake from forming behind the shark.

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Blue Grotto & Devils Den cavern dives

Filed Under (Uncategorized) by admin on 20-11-2008

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Seamor.org Diving School New Quay

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After getting these skills, you will completely enjoy scuba diving in West Wales. Complete necessary training successfully and you’ll acquire globally with seamor.org

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The Paleo Diet and Multiple Sclerosis (MS) Part 2/7

Filed Under (Uncategorized) by admin on 19-11-2008

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On October 3 2007, Direct-MS (http://www.direct-ms.org ), sponsored a public presentation by Dr. Loren Cordain of Colorado State University on the topic of “The Paleo Diet and Multiple Sclerosis” (en français: “Le régime Paléo…

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Brownie’s Third Lung : Surface Supplied Diving

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Scuba (okay, not really self-contained) diving with hookah-type equipment.

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scuba-diving-equipment.plosnir.com

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Dive Vietnam - Rainbow Divers PADI Diving - dive Vietnam with the best!

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Cocolobo and Roatan: my perfect honeymoon! - Boing Boing

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Sicilian.Net - Dating, friendship. romance & others.. - Sicilian.Net - Dating, friendship. romance & others

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DiveCompanie

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