“Mysterious cancer” killing sea lions along US West Coast — Bones turning to “mush” — “Inside there’s just masses of yellow, cancerous tissue” — Animals dying at “alarming rates” (VIDEO)

California Academy of Sciences (bioGraphic), Aug 29, 2016: Scientists Investigate a Mysterious Cancer Plaguing California Sea Lions… The disease starts in the reproductive organs… By the time they die, tumors have sometimes infiltrated their backbones and turned vertebrae to “mush,” [Tenaya Norris, a scientist at The Marine Mammal Center] says. She describes examining one dead animal whose spine she could simply slice through. More than a quarter of the adult California sea lions that die at the Marine Mammal Center suffer from cancer, says director of veterinary science Shawn Johnson.