Nembrotha lineolata
... that when attacked by a sea anemone, a nudibranch Nembrotha lineolata oozed a lot of mucus and escaped with difficulty?
... that when attacked by a <a href="./Sea_anemone" id="mwDBQ" rel="mw:WikiLink" title="Sea anemone">sea anemone</a>, a <a href="./Nudibranch" id="mwDBU" rel="mw:WikiLink" title="Nudibranch">nudibranch</a> <i id="mwDBY"><b id="mwDBc"><a href="./Nembrotha_lineolata" id="mwDBg" rel="mw:WikiLink" title="Nembrotha lineolata">Nembrotha lineolata</a></b></i> oozed a lot of <a href="./Mucus" id="mwDBk" rel="mw:WikiLink" title="Mucus">mucus</a> and escaped with difficulty?