The North Pacific right whale (Eubalaena japonica) was heavily exploited by both nineteenth century whaling and recent (1960s) illegal Soviet catches. Today, the species remains extremely rare especially in the eastern North Pacific.
Scientists analyzed beluga whale livers to look for temporal trends between PFC concentrations from two groups and to speculate on the different sources of PFCs. They examined geographical and gender differences, and possible bioaccumulation of PFCs.
Monitoring Cook Inlet beluga whales and anthropogenic activities including coastal development, oil and gas explorations, shipping, and military activities.