The image shows a close up of a sea urchin on a black background, with the text "USNM 328664" at the top and bottom of the image.
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The image shows a close up of a sea urchin on a black background, with the text "USNM 328664" at the top and bottom of the image. The urchins are round and have a light brown color, with a few small bumps and ridges along its surface. They are arranged in a symmetrical pattern, with some of the bumps slightly overlapping each other. The text is written in a bold, white font, and the background is a deep, dark black.
