Wamasus are large lizard like creatures that are known to live in the Black Marshes of Nirn. They are best described as "intelligent dragons with lightning for blood".
The Wamasu are violent creatures that can grow to be fearsome threats. One legends tells of one known as "Haynekhtnamet" that took seven days to kill. One of the men took a tooth as a trophy and turned it into a dagger that was found to deal electric damage to those it was used against.