Merse

Merse are a species of carnivorous aquatic creature. They resemble fleshy lily pads ringed with long black teeth, and are highly territorial towards intruders in their waters. They communicate by "singing" to one another, and by using instruments to replicate their songs, one can sail through them safely.

Their home planet is unknown, but it is known that a population of Merse were transplanted into Djamonkin Crater on Earth to guard a Forerunner artifact.

List of appearances

 * Halo: Cryptum