Studies: NW orcas among most contaminated marine mammals

June 25, 2014 10:15 PM

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Studies: NW orcas among most contaminated marine mammals

SEATTLE (AP) - Scientists studying Puget Sound orcas for the past decade now know they are among the most contaminated marine mammals, with pollutants particularly high in young killer whales, according to a report released Wednesday.

It shows that the orcas prefer to eat Chinook salmon and also consume fish such as halibut; hunt less, travel more and call louder when more vessels are in the area; head to the outer coast during the winter, foraging as far south as Central California and eating salmon from the Columbia and Sacrame...

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