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The snail shows some attraction to Urticina lofotensis and Epiactis prolifera and it will feed on these species, but the attraction is less than that for Anthopleura. These anemones also show a stronger retraction when bitten by the snail, so perhaps the snail anesthetic is most effective with Anthopleura. They are not attracted to Corynactis californica and are repelled by Metridium senile. Some snails contacting Metridium senile were killed.
The species produces sand-encrusted egg capsules which are strung together by a thread. The capsules are laid among their anemone prey.
Small Pagurus hirsutiusculus hermit crabs frequently inhabit the empty shells.
The name "wentletrap" is from the German or Dutch word for "winding staircase".