Declines in North American catch potential of flatfish under RCP8.5 for the EBS, GOA, GOMX, US-SE and US-NE; declines in productivity for multiple species in Mexico, with the largest declines in productivity  for abalone and Pacific sardine. Impacts are greatest for artisanal species; declines in fish community biomass for all North American coasts except US-SW and the Canadian Arctic; declines are greater under RCP8.5 than RCP2.6. Modest increases  in landings of CA-QC and CA-AT surf clams and shrimp are projected under RCP2.6 by 2100 and declines in snow crab up to 16% are expected . Mussel landings increase 21%, while declines in shellfish and lobster landings  are twice as high under RCP8.5  as RCP2.6. Shellfish and snow crab landings decline in CA-QC and CA-QT; declines under RCP8.5 are double those of RCP2.6. Climate change reduces EBS blue king crab recovery in simulations. Relative to the USA and Canada, Mexico has the strongest benefits in net catch under RCP2.6 relative to RCP8.5 ; increases of 70% in catch potential projected for the Canadian Arctic  under RCP8.5 . High-resolution and size-spectrum models project declines in groundfish catch and biomass in S-EBS. Shifting transboundary stocks may increase challenges.
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report