From Creatures Wikia
The Moray Ettins were made by Slaterbait of the Mechan Saga. Little is known about them, as they were extinct for a period of time before refound by Trix and placed on the Lost Archives. They are aquatic ettins with gills, and therefore have to live in water. They appear to have chichi disposion, altough the genome they were truly based on remains unknown. However they are described as being "lonely" and "spiteful". They make a good "feeder" ettin if you have Cetus Grendels. They use the sprites of the C3 Ettin and Grendel.
They can be downloaded along with the rest of Slaterbait's breeds at the The Lost Archives.