pl23_expn3018.jpg
![A pycnogonid crab on a canyon wall expn3018.jpg A pycnogonid crab on a canyon wall](https://s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_expn3018.jpg)
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https://www.noaa.gov/media/digital-library-photo/pl23expn3018jpgDescription
A pycnogonid crab on a canyon wall. What causes the white trails on the rockwall?
Credit
NOAA OKEANOS EXPLORER Program; Our Deepwater Backyard
Display Date
20140920T141925Z
Collection
Voyage to Inner Space
Ocean Exploration Collections
Modern Expeditions
Our Deepwater Backyard 2014