The Mermaid costume may cost a lot, but it's well worth it for this cool costume. It costs 525 credits, and you don't have to have a membership.
How to Become A Mermaid on Poptropica[]
- Go to the Store.
- Get the Mythology Surfer outfit, and customize the blue Poseidon top, necklace, and belt.
- Next, get the Gamer Girl outfit. Customize the hair.
- Use the blue Geisha skirt.
- Make your skin as close to that blue as possible via the Colorizer in the "New You" shop on your Home Island.
- Use the Fairy Queen's lips and bangs.
- Get the Swamp Monster costume and costumize the fin.
- If you want, get the Basic Followers Pack (Store) and get the bubble follower.