Saving Seafood

Killing Sea Lions to Save Salmon

January 31, 2019 — The following is excerpted from a story published today by The Atlantic:

Let us first establish that sea lions are supposed to live in the sea.

Since the 1990s, however, male sea lions—a handful at first, now dozens—have been captivated by the attractions of the Willamette River. They travel all the way from Southern California to Oregon and then swim up 100 miles of river to arrive at an expansive waterfall, the largest in the region. Here, salmon returning to spawn have to make an exhausting journey up the fish ladders of the Willamette Falls. And here, the sea lions have found a veritable feast.

“[They’re kind of sitting ducks,” the wildlife biologist Sheanna Steingass told me, describing the salmon. She paused to consider the metaphor. “Or sitting fish.” Every sea lion eats three to five fish a day.

In another world, this could just be a story about the intelligence of sea lions and their adaptability to river life. But in this world—where salmon populations throughout North America have plummeted, and where the winter steelhead run at Willamette Falls has fallen from 25,000 fish in the 1970s to just hundreds in 2018—it’s a dire story for the fish. After spending years trying and failing to deter the sea lions by nonlethal means, the Oregon Department of Fish and Wildlife, where Steingass leads the marine-mammal program, started “lethal removal” of sea lions in December. As of mid-January, they have trapped and euthanized five sea lions at Willamette Falls.

Killing animals to save other animals is always controversial. Animal-rights groups like the Humane Society of the United States denounced the sea-lion killings, calling them a distraction from the salmon’s real problems. And it’s true that a long chain of human actions—overfishing, destruction of salmon habitats, dams blocking their migration, hatchery mistakes—have led to what everyone can admit is this nonoptimal situation.

“In a perfect world, in an unaltered world, this wasn’t a problem, because historically there were 16 million salmon in the Columbia River,” says Doug Hatch, a senior fisheries scientist at the Columbia River Inter-Tribal Fish Commission. The sea lion’s appetites would have barely made a dent. It’s only because humans have so unbalanced the natural world that as drastic an action as culling sea lions could appear to be the fix.

Read the full story at The Atlantic

 

RAMONA DENIES: Should Oregon Kill Sea Lions to Save the Salmon?

October 18, 2018 — Used to be, they’d show up at Willamette Falls around late November—beefy males here to bulk up and loll on the docks. Call it sea lion winter break; time off from California’s Channel Islands rookeries, beaucoup steelhead to eat, zero problems. (No pups, no ladies, no predators.) When it was time to head back south, a 400-pound sea lion might have doubled in size, having chowed down on, at minimum, three 15-pound Pacific Northwest salmonids a day.

Nowadays, these party boys are arriving earlier and staying later. And they’re not just loitering in Oregon City. They also mob the Columbia River, particularly around January, for chinook on their way to spawning grounds—eating, by one report, as much as 45 percent of some salmon runs, a feast season that now draws out through June.

“They’ve learned that in April and May there’s a pretty good buffet,” says Robert Anderson, a fishery biologist at the National Oceanic and Atmospheric Administration. “Particularly over the past four to five years, there’s been a good uptick in the California sea lions that go to Willamette Falls.”

The result, warned Oregon’s Department of Fish & Wildlife in a 2017 study, is a 90 percent chance some of the Columbia River’s already struggling salmon populations will soon go extinct. And that’s causing some Northwest legislators to take aim at sea lions.

The irony here? Both species are protected by federal law—salmon (steelhead, chinook) by the 1973 Endangered Species Act and sea lions (California and Steller’s) by the 1972 Marine Mammal Protection Act. That means state, federal, and tribal agencies’ hands are tied when it comes to lethally removing hungry sea lions from river systems—like the mid-Columbia—where historically they’ve never been. According to Charles Hudson of the Columbia River Inter-Tribal Fish Commission, that’s the choice we have to make: do we kill one species to save another?

Read the full opinion piece at Portland Monthly

Salmon survival: ‘We need more lethal removal of sea lions. Hazing is not the answer’

April 6, 2018 — Ted Walsey’s shotgun cracked like thunder, lobbing a cracker shell into the Columbia River and sending the big brown sea lion beneath the surface in search of friendlier waters. But the boat and the noises emanating from it weren’t far behind.

Just as crews from the Columbia River Inter-Tribal Fish Commission have for a number of years, Walsey, Bobby Begay and Reggie Sargeant patrolled the river just below Bonneville Dam on Wednesday afternoon, harassing but not killing sea lions with cracker shotgun shells and so-called seal bombs — both essentially big firecrackers, the former shot from a shotgun, the latter dropped by hand — downstream and away from the fish ladders, where endangered migratory salmon congregate.

For the salmon, it’s the first chokepoint on a long journey to their spawning grounds. For hungry sea lions, it’s like a quick trip to an all-you-can-eat buffet.

The National Oceanic and Atmospheric Administration Fisheries division estimates about 45 percent of spring chinook salmon are lost between the mouth of the Columbia and Bonneville Dam, with sea lions being primarily responsible.

Sea lions — as well as whales, dolphins and porpoises — are protected under the Marine Mammal Protection Act. For the last 15 years or so, states and tribes have been able to kill some sea lions, but they have to go through a long and laborious permitting process to do so on an animal-by-animal basis.

Read the full story at TDN