She pours the items into a large tray and carefully sifts through the mix. Ethel sifts through the rubbish and eventually finds Mildred's tea-stained project. The "K.polythalamia" sifts mud and sediment with its gills. It even sifts through sand looking for food, cleaning the sand in the process. Omnivorous, this fish sifts the substrate for plant material and small organisms. Several days later, Jack sifts through boxes of memorabilia in the basement. Concurrently, Eve sifts through photos of nursing staff at the hospital.