The Mermaid Mansion is a gamepass in Adopt Me! which can be bought for 
400.
Appearance[]
The Mermaid Mansion comes in a bubble that surrounds the house, and there are a couple of clams with pearls outside. Inside the house, there is a pool in the center and some sea-related furniture. It has a total of four spacious rooms. The owner can change the color of the shell by changing the color of the house.
Gallery[]
The sideview of the Mermaid Mansion.
The front exterior of the Mermaid Mansion.