| http://www.w3.org/ns/prov#value | - Effectively, up until three years ago, we had no evidence that polar bears were accomplished long-distance swimmers.So startling was the discovery that, at the time, Jon Aars, a researcher at the Norwegian Polar Institute, said that it showed that polar bears could in many ways be classified as marine mammals - a group including whales and dolphins.Should they in fact be marine mammals", it is ha
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