Brest arrival delayed by Starfish

One lucky starfish about to get minced through the bow roller but spotted whilst checking the angle on the chain. Would it let go? Not on your life. The first attempt to remove it was to douse it with a litre of fresh water. At first nothing happened so we were pondering step 2, maybe a bit of salt and vinegar? Alas it found fresh water so disgusting that it pealed itself away and fell to the depths.