Stromfels

The Shark God, God of the Dangers of the Seas, the sworn enemy of Manann and his followers. Whereas Manann is at times a capricious and uncaring God, Stromfels is a far more malevolent deity who takes great delight as a predator who takes the lives of those who sail on the sea. Worship of Stromfels is outlawed throughout the Empire and the Wasteland, and is punishable by death.1a

Theologians often debate the nature of Stromfels, some claiming him to be a primeval Norscan God, whilst others see him as an aspect of the Blood God. Other scholars muse—never within earshot of a follower of Manann, of course—that the two Gods are one and the same, that Stromfels is merely an ancient aspect of Manann.1a

Priests of Manann vociferously disagree. Followers of Stromfels see things differently, however, viewing their God neither as an aspect nor sect, but as Manann viewed as he truly is—Manann the Destroyer, the furious and unbridled wrath of the sea. Stromfels is worshipped by the raiders of the Sea of Claws, by wreckers along the coastal and river regions of the Empire, and by pirates throughout the Old World, especially in Sartosa where he is worshipped openly.1a

Source
Warhammer Fantasy RPG 2nd ED -- Tome of Salvation -- pg. 33