| Mollusca | Gastropoda | Caenogastropoda | Littorinimorpha |
| Littorinidae | Littorina | sitchana |
| Genus | Species |
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Puget Sound, Washington
47.7237° N
122.4713° W
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dry
dry
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Originally no coordinates provided. Approximate coordinates georeferenced by volunteer Annie Shen, 2021.