First posted April 24, 2023 For additional information, contact: Contact Information,Geology, Minerals, Energy, & Geophysics Science CenterMenlo Park, CaliforniaU.S. Geological SurveyBuilding 19, 350 N. Akron Rd.P.O. Box 158Moffett Field, CA 94035 Trace-metal concentrations in sediment and the clam Limecola petalum (World Register of Marine Species, 2020; formerly reported as Macoma balthica M....