Found within festering, stagnant pools reeking of decay or contaminated, brackish bodies of water, abyssal eels are loathsome eel-like ambush predators and scavengers that lie in wait for a potential meal. Adult abyssal eels can grow to enormous lengths, sometimes as long as 12 to 15 feet and the girth of a humanoid leg. Their tough scales are tones of grey, green and brown, the better to camoflauge themselves in the waters they call home. The maws of an abyssal eel are lined with vicious, 3-inch long, serrated teeth curved backward into their mouths to better grasp whatever wriggling prey they can catch and devour. Their bite is noxious and wounds inflicted by their fangs may fester and become infected if not properly treated. While smaller specimens are regarded as a vicious nuisance that are often sought out and destroyed at the first sign of their presence, larger specimens are more dangerous and are capable of constricting and suffocating a grown humanoid. Abyssal eels rapidly multiply and spread throughout linked bodies of water, rapidly devouring other species.

Abyssal Origin. It is thought that abyssal eels are native to demonic planes where they are mere scavengers that feed on whatever falls into their waters. They appear to not be native to other realms, and as a highly invasive and aggressive species they rapidly outcompete native species and turn water bodies once thriving with life into miserable pools devoid of other species with only rotting and sickly plants clinging to survival.