Fig. 5. Relative frequency of seal specimens (Phocidae, Otariidae) in mammal assemblages, south–central Northwest Coast sites located on rivers. Included all assemblages with sample size >30 identified specimens. Sites are Glenrose Cannery (three components) Duwamish, Hoko River Rockshelter, Sbabadid (one component). See Butler and Campbell (2004) for more site information.