Taste doesn’t really have anything to do with it. Barnacles- one of the better-known types of Biofouling- use the ship's hull as a feeding ground (unintentionally, they evolved to cling to rocks not ship hulls). They have arms to capture plankton and stuff when they need to eat, they hold on to the hull with a form of natural cement excreted by a gland. The anti-fouling paint doesn’t allow them to cement themselves to the hull.
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