"The study used models to estimate marine mammal consumption of Chinook salmon based on several assumptions about their diet and the size and weight of salmon. The researchers estimate that from 1975 to 2015, the yearly biomass of Chinook salmon consumed by sea lions, seals, and killer whales increased from 6,100 to 15,200 metric tons, and from five to 31.5 million individual salmon."
NOW HOLD on just one minute, back in late 90's early 2000, the Salmon was put on the ESL because of the evil loggers and uncontrolled irrigate-rs stealing water from them and causing in-stream silting of spawning beds!!!

Two things can be true at the same time.
This is true how ever one is easily estimated where another is more difficult. This estimation does not include the huge increase in other forms of depredations. Cornmerants are protected, and obviously need none. Not to mention the increase of walleye, Pikeminnow, and Mergansers.
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