Assertion: barnacle's predator | /r/HasProperty | whelk
Facets:
Source sentences:
text: Their major predators are Whelks, who detect them by smell and have a spiral shell and feet designed to drill into the barnacle shell (Paul Hatcher and Nick Batty, 2012).
text: Their main predators are whelks--snails that envelop the barnacle's cone and force the valves open.