A hagfish is all covered in slime so that it can easily swim into the mouth of a sick or dead fish and suck out its flesh.
Marine invader
Marine invader A species of large predatory whelk, "Rapana
venosa", from Japan is invading the eastern coast of the United
States. The whelk, which is thought to have arrived in a ship's
ballast, could threaten commercial clam beds. 30 JANUARY 1999, P. 23
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