| Mollusca | Gastropoda | Caenogastropoda | Littorinimorpha |
| Littorinidae | Lacuna | unifasciata |
| Genus | Species |
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Ocean Beach, San Diego, California.
32.7495° N
117.247° W
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dry
dry
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Originally no coordinates provided. Approximate coordinates georeferenced by volunteer Annie Shen, 2021.