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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.


X-Ray Front Page

Ecology

  • Half of US coral reefs in 'poor' or 'fair' condition
      |  
    A report issued July 7, states that nearly half of U.S. coral reef ecosystems are considered to be in "poor" or "fair" condition according to a new NOAA analysis of the health of coral reefs under U.S. jurisdiction.

  • Caribbean monk seal extinct
      |  
    After a five year review, NOAA’s Fisheries Service has determined that the Caribbean monk seal, which has not been seen for more than 50 years, has gone extinct. The first type of seal to go extinct from human causes.

  • Microbes Could Be The Key To Coral Death
      |  
    Coral reefs could be dying out because of changes to the microbes that live in them just as much as from the direct rise in temperature caused by global warming, according to scientists.

  • Fish discovered off Ambon prefers to crawl, not swim
      |  
    Fish discovered off Ambon will rather crawl than swim The new species of frogfish we described in X-Ray Mag #21, could represent an entirely unknown family of fishes, says a University of Washington

  • Published in X-Ray Issue:   22 - Mar 2008
    Nudibranchs
      |  
    Most divers have seen them. Weird-looking crawling creatures with odd shapes, antennae and amorphous bodies and draped in pychedelic colours. We are not talking about aliens from outer space but nudibranchs. But why do they have to look so weird?
    Download pdf: Nudibranch colours
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  • Published in X-Ray Issue:   21 - Feb 2008
    Ecosystems
      |  
    The popular anemone fishes are mostly known for their symbiosis with giant sea anemones, their interesting behaviour, and beautiful colours. But they also have another lesser known but interesting sid
    Download pdf: Sex on the Reef
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  • Published in X-Ray Issue:   19 - Oct 2007
    Fish
      |  
    Fish stocks are depleted world-wide. Over fishing, pollution and coastal development is putting the aquatic resources under strain. Eco-friendly tourism battles against the need for food. Scuba divers rage against dynamite fishing. The oceans struggle to sustain human activities. Many see fish farming as the solution to save the fish stocks and keep feeding people.
    Download pdf: Fish for all
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  • Published in X-Ray Issue:   19 - Oct 2007
    Corals
      |  
    Different conservation groups have the last couple of decades brought our attention to the destruction of the world’s tropical coral reefs. These reefs are visited by millions of tourists and are the livelihood for many more millions of people. However, some of the largest coral structures in the world are found in the cold and gloomy waters of the deep-sea. These are also under increasing threat.
    Download pdf: Cold Water Corals
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  • Published in X-Ray Issue:   17 - Jun 2007
    Ecosystems
      |  
    Across the globe, coral reefs are in peril—this is already old news. Man-made stresses—overfishing, pollution and climate change—has sent even pristine coral reefs around the world into a drastic decline causing major changes in ecosystem structure. The resilience and regenerative capacity of reef ecosystems—that is, their ability to absorb shocks, resist phase shifts and regenerate after natural and human-induced disturbances—are being overwhelmed by these stresses causing dramatic shifts in species composition, often incurring huge economic losses too.
    Download pdf: Ecosystem changes
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