Arctic orcas highly contaminated
View at BBC NEWS
Killer whales have become the most contaminated mammals in the Arctic, new research indicates.
Norwegian scientists have found that killer whales - or orcas, as they are sometimes known - have overtaken polar bears at the head of the toxic table.
No other arctic mammals have ingested such a high concentration of hazardous man-made chemicals.
The Norwegian Polar Institute tested blubber samples taken from creatures in Tysfjord in the Norwegian Arctic.
The chemicals they found included pesticides, flame retardants and PCBs - which used to be used in many industrial processes.
Killer whales have become the most contaminated mammals in the Arctic, new research indicates.
Norwegian scientists have found that killer whales - or orcas, as they are sometimes known - have overtaken polar bears at the head of the toxic table.
No other arctic mammals have ingested such a high concentration of hazardous man-made chemicals.
The Norwegian Polar Institute tested blubber samples taken from creatures in Tysfjord in the Norwegian Arctic.
The chemicals they found included pesticides, flame retardants and PCBs - which used to be used in many industrial processes.
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