Deep-sea urchin in the process of defecating. Urchin mouths are on the bottom of their body, while the anus is on the top of the body.
Urchin Poop
Image courtesy of the NOAA Office of Ocean Exploration and Research, Exploring Deep-sea Habitats off Puerto Rico and the U.S. Virgin Islands. Download larger version (jpg, 1.2 MB).
Deep-sea urchin in the process of defecating. Urchin mouths are on the bottom of their body, while the anus is on the top of the body.
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