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Diogenes heteropsammicola is a species of hermit crab that lives within "walking corals" of the genera Heterocyathus and Heteropsammia.https://urldefense.com/v3/__https://dashboard.wikiedu.org/training/students/evaluating-articles__;!!JYXjzlvb!hZu9RKlI8uqnWL1F7XkEYSYl1bydCZWixULJooMS081WGtOayQR9o97cBaYV5pKqs8FPfNM1mo67ggjEw_EPqsvVZL_cHuYOPoHNVq5w$



These coral have an internal cavity that is typically occupied by a symbiotic sipunculan worm; in the crab's habitat in the Ōshima Straight south of Amami Ōshima, it is often found inside the corals instead. http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0184311