Dead Orcas. State of Southern Resident Orcas. Almost 20% orcas died between 1995 and 2000.Reproductive females have not produced young in ten years.Only four adult males in the entire community of 80 whales.. Puget Sound Orcas and PCBs. Highest levels of PCBs in blubber of any marine mammal in the worldAverage almost 150 ppm<10 ppm PCB is known to cause immune problems in sealsDead female transient orca on Dungeness Spit in May 2002 1000 ppm PCB12ppm- EPA's standard for marine sediments.
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