Anal sack of a sea urchin (Echinothrix calamaris). Photographed in Fish market in Biak, West Papua Indonesia.

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

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