To finish the quest Blood in the water you must kill Abyssal Cult Members. You can find them in water rifts in Shimmersands, Iron Pine. Blood in the Water. 3 meter range No cost Instant Cooldown: 10 seconds. One of the larger razormaw's vicious assaults have left you bleeding. The smell of. This video shows a good location where you can kill the Abyssal Cultists for the quest " Blood in the Water ".