Phantom Rose Grid has extensive underwater features for Mer folk. At welcome area, take the regional TP to Grotto. From there you can travel thru the grid underwater, via the Mer Portal. Phantom Rose Welcome has free fins made by Lannorra and a Mer Playground with merry-go-round (original by Bad Katz and customized by Lannorra), swings and a treasure chest to find. Each region on the grid has its own unique mermaid area.