Anal sack of a double spined urchin (Echinothrix calamaris). Photographed in Manokwari, West Papua in Indonesia, Asia.

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Size: 2848px × 4288px
Photo credit: © MATTHEW OLDFIELD/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: anal, animal, anus, asia, asian, biological, biology, calamaris, close-, double, echinoderm, echinodermata, echinothrix, fauna, indonesia, invertebrates, manokwari, marine, nature, papua, sack, sea, spined, tropical, underwater, urchin, west, wildlife, zoological, zoology