The image shows a collection of littorina obtusata shells on a black surface, accompanied by two cards with text and a barcode.
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The image shows a collection of littorina obtusata shells on a black surface, accompanied by two cards with text and a barcode. The shells are of various sizes and shapes, with some having a smooth, glossy finish and others having a more rounded shape. The cards have text written on them, likely providing information about the shells.
