Trion Worlds has begun showcasing the new zones and content coming in RIFT's Nightmare Tide expansion in this week's dev post on Goboro Reef, which will soon become your new favorite spot to drown to death. Expect mesmerizing mermaids, an endangered reef, a threatened well, a critter hatchery, untrustworthy guards, a quest to save the Plane of Water, and the Grotto of Horror.
So basically, California.
Trion promises that a peek at the Pelagic Order and more bits about the zone are en route. Catch the whole post on the official site.