Complex sentence: Lebensauger (Germ. Leben "life" + Sauger "sucker") are hideous lamprey-like Wesen that have porous skin and large, funnel-like mouths with sharp teeth.
Split into simpler sentences: Lebensauger (Germ. Leben "life" + Sauger "sucker") are hideous lamprey-like Wesen. When morphed they have porous skin and a large, funnel-like mouth with sharp teeth.