H2o is adding another mermaid!!!!!! Thats right, another mermaid. 17-yearold Indiana Evans is diving into the hit show H2o just add water as the new mermaid Bella. Cariba (Rikki) and Phoebe (Cleo) are expected to return,Claire (Emma) will not return to the show because she is filming a movie. Unknown if there will still be a merman, how Bella became a mermaid, and if she will be good or evil. I found this out in a link in this spot. H2o is to start filming in November at Gold Coast Austraila. Bella will be the newest adition to the group.