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After second year of mass shark deaths in SF Bay scientists zero in on cause Photo

After second year of mass shark deaths in SF Bay scientists zero in on cause

Beginning in March, and for the second year in a row, hundreds of sharks have washed up dead or dying along the shores of the San Francisco Bay. Primarily the species that have been most affected are Leopard Sharks and Bat Rays. Mass elasmobranch die-offs have periodically been recorded in the San Francisco Bay since 1967, but scientists now think they are narrowing the possibility to one species of fungus that fatally infects the brains of these species.

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Call for entries: 2017 Raja Ampat Underwater Photo Contest Photo

Call for entries: 2017 Raja Ampat Underwater Photo Contest

The 2017 Raja Ampat Underwater Photo Contest is calling for entries. The wide angle category is free for up to 5 entries, which must have been taken in the Raja Ampat region between August 2016 and August 2017. The contest has also added a new macro category that is only open to individuals who have booked onto several mandatory trips with the contest’s sponsor. The deadline for entries is 31 August 2017.

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Issue 79 of X-Ray Magazine is available to download Photo

Issue 79 of X-Ray Magazine is available to download

Issue 79 of X-Ray Magazine is out! This edition features articles about diving the Great Lakes, Lake Malawi and Tioman Island. Rosemary E. Lunn covers the travel restrictions for those planing a visit to Egypt’s Red Sea and Steve Lewis describes his experiences of falling foul of the US visa The featured photographer is Becky Kagan Schott and Mike Johnson covers video use in black water diving.

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Issue 96 of UwP Magazine is available Photo

Issue 96 of UwP Magazine is available

Issue 96 of Underwater Photography (UwP) magazine is now available to download. Featured in the May/June edition are reviews of the WeeFine Ring Flash, the results of Our World Underwater 2017 and an article about coral bleaching on the Great Barrier Reef. Locations covered include Papua New Guinea, Dumaguete, Mexico, Canada and the Farne Islands, UK. As always, there is lots of additional information about products, images and ideas.

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Scientists discover what gives Antarctica’s Blood Falls their signature color Photo

Scientists discover what gives Antarctica’s Blood Falls their signature color

A team of scientists have uncovered the mysterious reason why Antarctica’s Blood Falls gets its signature color. A new paper published in the Journal of Glaciology shows that signature color is due to high levels of iron and a salty source lake underneath the glacier. Original theories pointed to red algae, but that was debunked by these recent findings.

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Video: A humpback whale’s POV under Antarctica Photo

Video: A humpback whale’s POV under Antarctica

Temporary suction-cupped cameras are giving National Geographic researchers a “whale’s eye view” into exactly what humpback whales are doing under Antarctica, and some of it is brand new information. The cameras automatically release after 24 to 48 hours, so the filming is limited, but already there are a few surprises. The whales are feeding much deeper than expected as well as using their blow-holes to break up sea ice to breathe.

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