The Shark Isles lazily float around the edges of the Šadullu mainland. These sky islands are massive earth motes in the shape of enormous sharks, massive fish, and other sea-life on a scale only found on worlds like the Cresting Spires. In the ancient libraries of Aphalur, there is a book that says the Nine-Tongued Worm brought these alien creatures to Bal-Kriav. They were to help in the destruction of Šadullu, spreading their entropic emanations into the continent. Further into the book, it says that when the World Destroyer was driven off, "a broken continent was left in its wake, and in the skies around, the petrified bodies of colossal sharks prowling coasts now hundreds of feet above a Dark Sea."