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Deepwater Hermit Crab

Deepwater hermit crabs of the family Parapaguridae have a very strange association with a sea anemone, family Hormathiidae. The crab starts out inhabiting a shell. The sea anemone settles on the shell and then overgrows it, eventually dissolving the shell and forming a covering that expands as the crab grows.

Video courtesy of the NOAA Office of Ocean Exploration and Research, 2015 Hohonu Moana.



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