The third of three killer whales that spent at least three weeks in the Nushagak River has been found dead. The carcass of the juvenile Killer Whale was found by a local resident on Friday near Grass Island, in the River near Dillingham. Biologists believe the juvenile whale swam there and died. The whales were first spotted swimming up the Nushagak in September. Two of the three whales’ were found dead Oct. 8, but residents reported seeing the juvenile whale alive and swimming down the River toward Bristol Bay. A team of NOAA Veterinarian’s spent most of last week completing necropsies on the other two adult Whales. The team left Dillingham Thursday to continue their investigation in the lab. No word yet on whether there are plans for a third necropsy.