'Twould seem the city's waterways have become contaminated with whisperworms─tiny creatures that crawl into a man's ears during bathing and cloud his mind, convincing him he is hearing voices. If the worms grow in number, half of Ishgard could be rendered mad. The only way to get rid of such annoyances is to drop blueclaw shrimp into the sewers and pray to Halone that they eat their fill and cleanse the water of pests.