From Destinypedia, the Destiny wiki

Destiny-GhostConstruct.png This article is a stub. You can help Destinypedia by expanding it.

Nereid is one of the moons of Neptune. The Guardians Jakinda and Yael tracked down the Hive In-Atôth to Nereid at some point, and killed them in retribution for the death of their third fireteam member.