Joel Sartore / Photo Ark / Group of Eastern white slippersnails (Crepidula plana) inside shell of Lightning whelk (Busycon contrarium), Gulf Specimen Marine Lab and Aquarium.
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Joel Sartore / Photo Ark / Group of Eastern white slippersnails (Crepidula plana) inside shell of Lightning whelk (Busycon contrarium), Gulf Specimen Marine Lab and Aquarium.