Mandi did as she was told, at first thinking nothing had happened, until she tried swimming and realised her legs had changed. "See, if I had a tail like this I'd never be out of the water," she said, resting on the edge of the cave and looking at them. "Are you sure you don't want to come with us Linda?"<br/><br/>"If nothing else YOU need to concentrate," Linda said, laughing. "Don't want you two missing something important because you're too busy looking at me when you think I can't tell you are."