Are sea otters being exposed to subsurface intertidal oil residues from the Exxon Valdez oil spill?

► Oil residues (SSOR) are sequestered in subsurface layers at some beaches. ► Beach features that promote sequestration of SSOR are not found where otters dig. ► Sea otters dig intertidal foraging pits in areas without SSOR. ► PAHs from SSOR are not being mobilized to contaminate intertidal animals. ► No evidence of exposure to SSOR through direct contact during pit-digging.