Princess Shirahoshi, famous in the world as the Mermaid Princess, is a giant smelt-whiting mermaid and the princess of the Ryugu Kingdom, as the youngest of King Neptune's children and the only daughter in the Neptune royal family. To entertain both herself and the people of the Sanctuary, she decided to get hired as a belly dancer in the Casino Pendragon. This giant mermaid often perform alongside Meroune Lorelei. Her dance is both impressive and very mesmerizing.