PBDE flame retardants and PCBs in migrating Steller sea lions (Eumetopias jubatus) in the Strait of Georgia, British Columbia, Canada

► PCBs and PBDEs were found at moderately high levels in Steller sea lions. ► Biotransformation was only evident for a limited number of PCB and PBDE congeners. ► 80% of the sea lions had PCB levels that exceeded toxicity threshold in pinnipeds.