The CAFF Marine Mammal Expert Network has recognised a need for better connectivity in the Arctic marine mammal acoustics community. To address this need, a circumpolar metadata base and a map of PAM instruments deployed throughout the Arctic has been constructed. The main goal of this metadata base is to unite researchers working in the Arctic and initiate international collaboration that could be important to policy and conservation planning. This map includes both past and current deployments within the CAFF Arctic boundaries. This map will be updated once a year.