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Recommended reading

  • DIRrebreather: Nitrox Rebreather Diving
    Cedric Verdier

    This book is dedicated to Nitrox rebreather diving and the basic principles and skills that every rebreather diver should know and master. It covers some topics like balance and trim with a rebreather, risk management, and proper Nitrox dive planning.



Sharks and Rays

  • Manta rays get sanctuary
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    Manta rays are getting their first designated protected area around Yap in the western Pacific.


  • New species of Manta Ray Discovered
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    Until now it was thought that there was only one manta ray species but now a second, and possibly third, species of manta ray has been discovered in the World’s oceans. After five years of study a marine biologist has confirmed that a larger and more elusive manta is in fact a distinct species.


  • US with new shark regulations
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    NOAA issues rule to prevent overfishing of Atlantic sharks. The new rule significantly lowers the fishing quotas for sandbar and porbeagle sharks in order to rebuild these depleted species. NOAA also will implement new regional quotas for the other large coastal sharks. The new shark regulations will take effect starting on July 24.


  • Swim or dive with sharks
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    For US$190-$290, visitors at the Georgia Aquarium, USA can snorkel or scuba dive in a 6.3-million gallon tank with sting rays, sharks, grouper and countless other species.


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  • Published in X-Ray Issue:   23 - May 2008
    Sharks
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    Why the peculiar head shape of the hammerhead shark developed as it did has been the subject of much speculation. Few other morphological oddities have inspired so many fanciful and sensible theories about its function as the weirdly shaped head that characterises the hammerhead shark. Recent experimental evidence supports some ideas and refutes others, while pointing to a previously unsuspected role for this peculiar feature.

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  • Published in X-Ray Issue:   18 - Aug 2007
    Sharks
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    Utila is the smallest of the Bay Islands off the coast of Honduras, where divers go in search of whalesharks, but find much more. Being the Executive Director of The Manta Network, a global conservation organization, I was very interested in the local efforts to protect whalesharks. Patric Douglas, Director of SharkDiver.com, invited us to stay in Utila and write about his dive group’s whaleshark experiences.

    Download pdf: Great White Shark
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  • Published in X-Ray Issue:   18 - Aug 2007
    Sharks
      |  

    Just their name, their size, and their menacing looks can evoke feelings of terror, fear and instinctive rejection. However, if you have the privilege to be able to dive with big tiger sharks, as I have, you might fall in love with them, at least you will bond with them in a mysterious way. They are certainly not as “cute” as marine mammals or nthropomorphized clown fish, but they will have an impact on you that could change your perception of sharks, and marine life, forever.

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