Hermissenda crassicornis(SEA SLUG) and anemones

[allen00se]

I recently spotted a sea slug as a hitch hiker, very beautiful and only about 1/4" long. We have identified it as a "Hermissenda crassicornis". The only problem is while doing some research we found out that one of its natural food sources is anemones. Does anyone know if they will try and feed on a large anemone, both of mine are at least 6" across, or will they stick to smaller pest anemone's?