It is Marnie Blue's very first day at Lady Sealia Foam’s Mermaid School, and she's terrified. What if she can't make any new friends, or if she's asked to ride a seahorse? What's more, her famous diva aunt Christabel was a notorious rebel at the same school, and got up to all sorts of naughtiness. Marnie is soon branded a troublemaker by her grumpy octopus music teacher and wants nothing more than to clam up.
But when a fellow pupil finds herself in danger, it's up to Marnie to show that daring runs in the family and swim to the rescue.

Filled with fabulous fishy fun, Mermaid School is perfect for fans of Unicorn Academy and Dork Diaries!


Lucy Courtenay works in children's publishing and has contributed to a number of series for young readers including Beast Quest and Animal Ark, whilst more recently writing romance for young adults. When not writing, she enjoys singing, reading and travel.

Sheena Dempsey is a children's illustrator and picture book author from Cork. She has illustrated many books including Dave Pigeon written by Swapna Haddow (Faber & Faber, 2016) which was shortlisted for the Sainsbury’s Book Award. Sheena now lives in London with her husband, Mick, and her retired racing greyhound, Sandy. She loves to write and draw characters that are bursting with fun, humour and mischief.


This fast-paced and sweet friendship/adventure story will charm young readers who are venturing into short chapter books.

Irish Independent

In a clamshell: delightful underwater adventure that will dolphinitely appeal to young readers!


This appealing young character certainly makes a splash on her debut, Dempsey’s expressive illustrations making Courtenay’s story sparkle.

The Echo (Cork)

Gorgeous illustrations, an inventive underwater world and a school-based story make this a perfect read for fans of the Worst Witch and Bad Mermaids.

WRD magazine

Filled with fabulous fishy fun, Mermaid School is perfect for fans of Unicorn Academy and Dork Diaries. With black-and-white illustrations throughout and accessible language, readers aged 5+ will love getting lost in this underwater world! The books all follow main character Marnie Blue as she becomes a student at Lady Sealia Foam’s Mermaid School. Over the course of the series, Marnie will learn how to come out of her shell, make friends, join the school show and sports day and even go on school trips. This is a marvellous series that explores first experiences while keeping little readers engaged with underwater magic! Lucy Courtenay is also the author behind the hit series Animal Antics.


Other books you'll love