Mermaid Grotto is a special place for Silly Days, located in Pixie Hollow (online game). It is accessible only during the Silly Days event, and only by players who completed a quest to receive a Mermaid Grotto Key badge, which doubled as a key to unlock the Mermaid Grotto. The quest was only accessible to members. It is accessible through Havendish Square, Palm Tree Cove, Cottonpuff Field, and Dewdrop Vale. It features gifts, mermaids, and interactive play.After the announcement of Pixie Hollow's closing, the Mermaid Grotto Key was made accessible without a quest and was located outside of Mermaid Grotto's entrance in Palm Tree Cove.