Russian media reported that it was the country’s most secret submersible, a nuclear-powered research submarine called the Losharik intended for sensitive missions at great depths.
Shipping is increasingly venturing into the Arctic — for tourism, trade and in search of untapped deposits of minerals and fossil fuels — therefore the potential for oil spills from platforms and vessels operating in remote locations is a major cause for concern among environmentalists since the 1989 Exxon Valdez disaster off Alaska killed a quarter of a million seabirds.
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