PROBLEM TO BE SOLVED: To provide a starfish repellent using a compound having degradability under a marine environment.;SOLUTION: The starfish repellent is discovered by virtue of homarine, β-cholestanol, cholesterol, L-phenylalanine or a thymine compound alone or a plurality of their combinations. The extract of sponge including Kinubariitokaimen (a kind of sponge) adhering to seashells is found to have starfish repellent activity.;COPYRIGHT: (C)2010,JPO&INPIT
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