What Every Good “Shark Week” Fan Should Read While They Watch

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Bluntnose Sixgill Shark Hexanchus griseus ? R. Dean Grubbs

Bluntnose Sixgill Shark Hexanchus griseus ? R. Dean Grubbs

VANCOUVER, BRITISH COLUMBIA, CANADA. August 13, 2012 – At the close of the annual meeting of leading American shark and ray scientists, the IUCN Shark Specialist Group (SSG) is releasing the first compilation of conservation status assessments for nearly 300 sharks, rays, and chimaeras (collectively known as chondrichthyan fishes) found in North American, Central American, and Caribbean waters conducted using the IUCN Red List of Threatened Species criteria. The report and supplementary materials can be downloaded from the IUCN website.

The report documents that 13.5% of the region’s shark, skate, and chimaera species qualify for one of the three “threatened” categories — Critically Endangered, Endangered, Vulnerable — associated with an elevated risk of extinction. Nine rays and 20 sharks qualify as Vulnerable. Sixteen percent of species are classified as Near Threatened, 27% as Least Concern, and 43.4% as Data Deficient. Read more

Researchers Discover Planet’s Northernmost Coral Reef

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Researchers have discovered the world's northermost coral reefs off Japan's Tsushima Island (Image: Kaoru Sugihara)

Researchers have discovered the world’s northermost coral reefs off Japan’s Tsushima Island (Image: Kaoru Sugihara)

Coral reefs are typically found in the warm, clear waters of the tropics and subtropics. Researchers in Japan have recently discovered a coral reef far north of any previously discovered on the planet, off the coast of Japan’s Tsushima Island at 34 degrees north latitude. As a reference, this would put the reef north of the city of Atlanta, Georgia. While cold water and deep water corals are found in polar regions, the types of reef-building corals discovered in Japan are generally much more sensitive to cold water and to cloudy or turbid waters, making this discovery all the more remarkable, especially in light of winter water temperatures of 13 degrees Celsius (55 degrees Fahrenheit), considered extremely low and most often fatal to most coral reefs. Read more