More Sea Lions, Fewer Fish
- June 09, 2017
- John Harrison
More sea lions and fewer spring Chinook salmon at Bonneville Dam this year was not good news for the fish.
Tag – Sea-lion
Sea Lion Fish Feast
- March 01, 2017
- John Harrison
The number of salmon and steelhead consumed by sea lions at Bonneville Dam last year, more than 9,500 fish, was the second-largest since observations and monitoring began in 2002, according to a report by the U.S. Army Corps of Engineers. During their annual spring foray into the Columbia River, sea lions also killed lamprey and sturgeon.
Going, going, almost gone
- June 07, 2016
- John Harrison
Sea lions that feast on salmon and steelhead are finally leaving Bonneville Dam, having taken their annual toll on migrating salmon and steelhead.
Sea Lions Feast on Salmon and Steelhead at Bonneville Dam
- May 19, 2016
- John Harrison
Fish kills peak in the first week of May, then decline. More than 50 of the most aggressive hunters have been permanently removed.
Chinook run increases, and so do sea lions
- May 03, 2016
- John Harrison
The U.S. Army Corps of Engineers reports that so far this year sea lions are killing more spring salmon than the 10-year average.
They're back, and they're hungry
- March 23, 2016
- John Harrison
Sea lions are back at Bonneville Dam to begin their annual spring salmon feast. Non-lethal hazing is under way.
Seals and Sea Lions Are Following Fish Into the Columbia River
- March 16, 2015
- John Harrison
An aerial survey by the Washington Department of Fish and Wildlife in February counted more than 6,000 seals and 1,600 sea lions in the Astoria area, according to a report in The Seattle Times.
Sea lion numbers are increasing, and so is predation on salmon and steelhead in the Columbia River
- January 15, 2015
- John Harrison
Research: Salmon disappearing, sea lions increasing
- November 05, 2014
- John Harrison
If the circumstantial evidence bears out, adult salmon returning from the ocean to the Columbia River Basin are being killed by seals and sea lions between the estuary and Bonneville Dam in alarming numbers, according to research by NOAA Fisheries.