Plot
Fiona Tyler was disappointed when she learned that swimming was not allowed at Sea-Haze House, a school on a wild, rocky coast. Fiona also learned that Marina Brown, another pupil, was a mermaid who had “run away” from the sea to become a schoolgirl. Fiona was the only person who shared Marina’s secret.
Notes
- Art: Bernard Greenbaum
Appeared
- Marina – Schoolgirl with a Secret – Mandy: circa #157 – #167 (28 March 1970)
- Reprinted – Mandy: #549 (23 July 1977) – #556 (10 September 1977)

Art by Bernard Greenbaum. The story is already in 1970-157 and that is not the start of the story.
Thank you for the information, the original must had more episodes, as it definitely ended in issue 167, but as I didn’t have the first issue, I assumed the start date based on the reprint.