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 Killing or removing 25 California sea lions over the past two years has not reduced the toll on salmon at the base of Bonneville Dam in the Columbia River.
A new report from the U.S. Army Corps of Engineers estimates sea lions ate 4,960 salmon and steelhead during the spring of 2009 — 2.4 percent of the fish passing the dam located near Cascade Locks, Ore. That compares to an adjusted estimate of 4,927, or 2.9 percent of the run, in 2008.
And while the number of California sea lions was down — 54 this year compared to 82 in 2008 — the average number of salmon eaten by each one was up, along with the number of Stellar sea lions — 26 this year compared to 17 last year.
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