Wolves are amazing hunters, so they tend to be apex predators wherever you find them...including one region in Alaska where these land-based predators sit atop a marine food web.
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Sources:
https://www.pnas.org/doi/10.1073/pnas.2209037120
https://www.smithsonianmag.com/science-nature/extraordinary-return-sea-otters-glacier-bay-180962999/
https://esajournals.onlinelibrary.wiley.com/doi/10.1002/ecy.1643
https://www.fws.gov/sites/default/files/documents/The%20keystone%20species%20role%20of%20the%20sea%20otter%2007302021.pdf
https://www.smithsonianmag.com/smart-news/in-alaska-hungry-wolves-have-started-eating-sea-otters-180981509/
https://www.yellowstonepark.com/things-to-do/wildlife/wolf-reintroduction-changes-ecosystem/
Images:
https://www.gettyimages.com
https://worldview.earthdata.nasa.gov/?v=-139.00036008135632,56.65799549958311,-133.019688129458,59.598233414698925&l=Reference_Labels_15m(hidden),Reference_Features_15m(hidden),Coastlines_15m,VIIRS_NOAA20_CorrectedReflectance_TrueColor(hidden),VIIRS_SNPP_CorrectedReflectance_TrueColor,MODIS_Aqua_CorrectedReflectance_TrueColor,MODIS_Terra_CorrectedReflectance_TrueColor&lg=true&t=2023-10-26-T16%3A57%3A25Z
https://www.inaturalist.org/observations/163403381
phrase=sea+otters&searchscope=image%2Cfilm&adppopup=true
https://www.inaturalist.org/observations/75695306
phrase=gray+wolf+face+alaska&adppopup=true
https://www.nature.com/articles/s41598-021-90608-6/figures/1