So that everyone is clear on this 86% number, here is the quote from page 4 of the report.
https://www.nature.com/articles/s41598-017-14984-8.pdf
"The percentage of the total coastwide smolt production consumed by harbor seals increased from
1.5% (3.5 million consumed out of 236.8 million estimated total production)
in 1975 to 6.5% (27.4 million consumed out of 423.4 million estimated total production)
in 2015. Harbor seals in the Salish Sea (i.e. Puget Sound, Strait of Georgia, and Strait of San Juan de Fuca)
accounted for 86.4% of the total coast wide smolt consumption in 2015, due to large increases in the harbor seal abundance in this region between 1975 and 2015 (8,600 to 77,800), as well as a large diet fraction of Chinook salmon smolts relative to other regions (see supplemental material)."
See what the 86% means.... It doesn't mean that harbour seals are eating 86% of the Salish Sea smolts.