The girls ask Bella to join them, and she agrees. The next morning, the girls and Lewis McCartney discuss Bella's tail and she shows them her powers on Lewis' drink by turning it into a gelatin-like substance. When a mysterious Water Tentacle attacks the girls and captures Rikki, Bella and Cleo jump into the water to save her, revealing to them that she was also a mermaid. Bella found a dark blue crystal at the bottom of said Moon Pool, tied it on a brown string and has been wearing it ever since.īella is the new girl in town and appears after Emma has left to travel the world with her parents. She found a sea cave with a moon pool, and when she jumped into it on a Full Moon, she went through metamorphosis. She lived with her parents in Ireland at the time, but they were busy at work, so she explored the area a lot. Bella became a mermaid when she was nine years old.