Assertion: brittle star's arm | /r/HasProperty | common
Facets:
Source sentences:
text: Lost arms are common and will eventually heal over, but it is unwise to buy a specimen that is freshly wounded as infection and rapid decline may follow.
text: However, brittle stars have long, flexible arms (hence the other common name for ophiuroids, "snake stars" and a central, armored, disk-shaped body that is clearly demarcated from the arms.