Tim Ragen: "Recovering Endangered Mammals"

05/09/19 • 30 min

Tim Ragen spent 15 years as a research biologist for NOAA, coordinated stellar sea lion recovery efforts, and then worked for 13 years with the U.S. Marine Mammal Commission. He has invaluable insight into what it takes to recover a species on the brink of extinction like the Southern Resident killer whales. Interestingly, Ragen supports a cull of seals and sea lions as a drastic measure to save decreasing Chinook salmon stocks, the preferred prey of the Southern Resident orcas, who do not eat marine mammals or sharks like other killer whales. Ragen asks all of us, what kind of world do we want to live in and are we doing all we can to protect that future?

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Kurt Russo: "Feeding Our Orca Ancestors"

For thousands of years, the Lummi Nation has been performing ceremonial feedings for killer whales, and continue that tradition today with the Southern Resident killer whales, who are now facing the real possibility of extinction. The Lummi believe the orcas are their ancestors. They recently assisted in a historic intervention to save the ailing calf, J50, who eventually died. Kurt Russo is with the Lummi Nation's Sovereignty and Treaty Protection office.

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Linda Rhodes: "Parasites In Sewage"

Linda Rhodes is a microbiologist with NOAA's National Marine Fisheries Science Center who studies how parasites in human sewage and animal waste may be hurting the Southern Resident killer whales. The amount of human sewage that ends up in the Salish Sea will shock you. It creates parasites that can enter the whales through their blow holes when they come up for air. Remnants of sewage have also been detected deep within the water column. It's possible these microbes could be causing the orcas to feel sick enough they don't want to eat, which may contribute to their health risks. Often experts point to a lack of food for the whales, who prefer Chinook salmon, which are also dwindling in number. But what if in addition to a lack of food, the Southern Residents just aren't hungry because they're sick?