Assertion: echinoderm's coelom | /r/HasProperty | body cavity
Facets:
Source sentences:
text: This is a network of fluid-filled canals derived from the coelom (body cavity) that function in gas exchange, feeding, sensory reception and locomotion.
text: This is not connected to external sea water via a madreporite, as in other echinoderms, but only connected through a large number of pores to the coelom (body cavity).