Dougill, Ashleigh2020-07-062020-07-062020-07-0121 Or. Rev. Int'l L. 2591543-9860https://hdl.handle.net/1794/2539628 pagesOn August 19, 2017, a net-pen fish farm belonging to international fishing company Cooke Aquaculture collapsed. The collapse released as many as 263,000 non-native Atlantic salmon into the Puget Sound, which significantly affected the surrounding environment and beyond. In the months that followed, the state of Washington and the province of British Columbia (B.C.)—the two most directly affected regions in the Pacific Northwest—responded both legally and politically. Although the collapse had similar ecological and environmental impacts on Washington and B.C., each region’s differing legal responses directly affected its ability to mitigate future fish spills.3enAll Rights Reserved.First NationsEnvironmental lawNatural resourcesAcquacultureFishing rightsArticle