Noi

Ancient Race of the noi
The Noi was the God Uwbris' second mortal creation, behind the Aricrux. They looked much like modern Mernoi, except they had scorpion stingers on their tails instead of flippers. They were at war with the Aricrux for most of their existence, until the famed Night of the Fallen God, when they faced extinction at the hand of the Aricrux. It was then that Uwbris gifted the Noi flippers and the ability to breathe underwater, changing them into the Mernoi. No Noi has been seen since.