Peanut worm. Coloured scanning electron micrograph (SEM) of a peanut worm (Phascolion sp.). This unsegmented marine worm possesses an introvert organ

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Peanut worm. Coloured scanning electron micrograph (SEM) of a peanut worm (Phascolion sp.). This unsegmented marine worm possesses an introvert organ (not seen) behind its mouth (upper left), a long contractile organ which is used for burrowing in sand or mud on the ocean floor. It is withdrawn into the body cavity when not in use. Peanut worms feed on detritus or microscopic organisms. When disturbed, they contract into a peanut-like shape, hence their common name. Magnification: x265 at 6x7cm size. x445 at 4x5ins

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Size: 3028px × 4044px
Photo credit: © DAVID SCHARF/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: animal, aquatic, biology, coloured, introvert, invertebrate, invertebrates, marine, meiofauna, microbiology, microscopic, nature, organ, peanut, phascolion, sem, sipunculida, sipunculoidea, sp., wildlife, worm, zoology