A “maximum” non-lethal effort to spook fish-eating sea lions away from the Columbia River’s Bonneville Dam seems to have had early success in at least one regard — nearly eliminating predation on big white sturgeon below the dam.
A “maximum” non-lethal effort to spook fish-eating sea lions away from the Columbia River’s Bonneville Dam seems to have had early success in at least one regard — nearly eliminating predation on big white sturgeon below the dam.