The Kaernk is a water monster found in the game Amnesia: The Dark Descent. It is invisible to the naked eye, but can be found by the splashes it makes as it walks through the water. It was delivered to Brennenburg Castle, where it was stored in deep wells where Tampter, an ingredient for a life-extending potion, could be extracted safely from the creature's saliva. The Kaernk's blood is yellow, as proved by a possible glitch in the game. Because of its invisibility, not much else is known. The Kaernk is not from this world. Since Amnesia has nothing to do with aliens, this means it is some kind of eldritch creature.