Eight-year-old Makenzi Seimer, a third-grade student at Greywolf Elementary School, examines a display of stuffed water fowl with Shelly Ament, a wildlife biologist with the state Department of Fish and Wildlife at Ament’s display at Friday’s Dungeness River Festival at Railroad Bridge Park in Sequim. (Keith Thorpe/Peninsula Daily News)

Liz Maier, a public health adviser for the state Department of Health, center, explains how clams filter sea water at a display booth at Friday’s Dungeness River Festival at Railroad Bridge Park in Sequim. (Keith Thorpe/Peninsula Daily News)

Americorps member Gabrielle Genhart-Stiehler, left, talks about a display of plastic debris that pollutes the ocean with Helen Haller Elementary fifth-graders Joe Dorrell and Darren George and educator Carla German at a booth by the Olympic Coast National Marine Sanctuary at the Dungness River Festival on Friday. (Keith Thorpe/Peninsula Daily News)