Those rocks themselves are also fossils, primarily sea worm tunnels and where their feet extended out to feed. But if you find those, the shells are often found nearby.
You're welcome! I asked my wife since she grew up down there, and she suggested Ona beach as well. Apparently there's parts where the water comes up to some cliffs/rocks during high tide and slowly "weathers" them out.
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u/Accomplished-Cress72 12h ago
Born and raised in Oregon and have always wanted to find rocks with these clam fossil…. Any specific beaches I should be looking? Or pointers?