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Isadora Moon #16

Grandes historias de Isadora Moon 5 - Isadora Moon y la sirena mágica: ¡Un libro mágico!

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Half vampire, half fairy, totally unique!

Isadora is special because she is different. Her mum is a fairy and her dad is a vampire and she's a bit of both.

Isadora has been invited to a sleepover, which is always fun, but this time it's even more exciting because she will be staying at her mermaid friend's house under the sea!
It's so much fun spending time with her watery friends, but while she's there Isadora meets a mermaid called Emerald who doesn't seem to be having such a nice time.
In the middle of the night, when everyone else is fast asleep, Emerald finally reveals to Isadora what has been troubling her. Can Isadora help Emerald sort out her problem? It's the beginning of an amazing underwater adventure!

Beautiful gift edition with silver sprayed edges and packed with extra activities and things to make and do.

142 pages, Kindle Edition

First published October 6, 2022

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About the author

Harriet Muncaster

212 books371 followers
Harriet Muncaster studied illustration at Norwich University College of the Arts before going on to get an MA in children’s book illustration at the Cambridge School of Art. In creating the art for her first book for children, she was thrilled to have found a good outlet for her lifelong fascination with miniatures. She lives in Hertfordshire, England.

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Community Reviews

5 stars
101 (53%)
4 stars
58 (30%)
3 stars
27 (14%)
2 stars
2 (1%)
1 star
2 (1%)
Displaying 1 - 18 of 18 reviews
Profile Image for Flavia.
282 reviews20 followers
August 9, 2025
I love Isadora and this is definitely the perfect book for an amazing MER sumMER !!
Profile Image for Sarah.
149 reviews
February 17, 2026
This was always going to be a winner with my daughter when it features mermaids 😂
Profile Image for Claire.
Author 31 books238 followers
January 2, 2024
Read with my daughter and we both enjoyed it.
Profile Image for Between The Pages (Gemma M) .
1,405 reviews28 followers
October 10, 2022
I love this series, but all read perfectly as standalones. These are perfect reads for young girls. Beautifully illustrated throughout. An adventure under the sea with one of our favourite characters Isadora. At the back of the book is plenty of activities, recipes and things to do. Highly recommend. A well deserved four stars.
Profile Image for Joey-Susan.
1,462 reviews48 followers
October 10, 2024
Isadora is invited to her mermaid friend Marina’s birthday sleepover but Isadora is nervous she doesn’t like being away from home. But she soon finds every mer-person at the sleepover is nice… well except Emerald. She soon figures out what’s wrong with her and sees the nice side of Emerald.

I loved the introduction to Emerald, I already read a few of her books but didn’t read this one before so it was nice seeing what Emerald was like. I felt so sad for her with all the things in her life being strange, new and difficult for her. I loved how kind Isadora was though even though she’d had a bad first impression, she was still kind and caring and looked after Emerald.

An honestly really super sweet book, I really loved reading about Isadora going under the sea and spending time with some new Mer-friends and seeing what her experience of the world below was like.

I loved the illustrations in this one so many full page illustrations and it was nice seeing the mix of Isadora’s world and the underwater world together. I really liked this one and it was a sweet story with sweet characters and a nice turn of events with seeing exactly why Emerald was so sad.
Profile Image for Mehsi.
15.9k reviews465 followers
May 3, 2023
Gelezen in het Nederlands (echt te gaar om de hele tijd boeken te gaan toe voegen). Dit was weer een superleuk deel in de Isadora Moon/Isabella Maan serie! Ditmaal mag Isadora naar een slaapfeestje van haar zeemeerminvriendin! Ze heeft er veel zin in, maar is ook nerveus. En dat is logisch, het is toch een eind verder en papa en mama kunnen natuurlijk niet zomaar haar ophalen. Ik vond het leuk dat haar familie tot het strand meeging en ook op haar wachtte in de buurt voor de volgende dag. En het slaapfeestje was onwijs leuk met toffe nieuwe karakters, onverwachte vriendschappen, en een spannend avontuur in de avond. Ook leuk dat het ook thema's aanraakt als nieuwe families, echtscheiding, en meer.
Aanrader!
1,383 reviews3 followers
April 24, 2024
Really cute story. Very creative.

The characters are unique but cute and have problems that are very relatable by children of the intended age.

Great books for 8-10 year olds or an older child who might want to pick up something light and fun.
Profile Image for Meesh.
107 reviews
August 17, 2026
i love how the book handled the familiar topic of separated parents and introducing their new partners to the children!!! i also appreciate the empathy isadora shows towards emerald, i know this is a kids book but it really touched my heart :’)
Profile Image for Franko.
147 reviews20 followers
August 24, 2026
Priča o Isadori Moon pod morem je lagana i zabavna, s dovoljno mašte da zadrži pažnju mlađih čitatelja. Ilustracije su simpatične, a glavni lik je zanimljiv spoj vile i vampirice. Dobra je za čitanje s djecom ili kao lagano štivo prije spavanja.
8 reviews
April 4, 2025
I think it was a really nice book for anyone who would love underwater adventures.
1 review
May 28, 2025
I enjoyed this book because Isadora Moon helps one of her friends' sisters pet.
This entire review has been hidden because of spoilers.
3 reviews
August 18, 2026
I liked it because I like sleepovers, mermaids and the beach and the ocean. I love Isadora Moon and Emerald together especially pink bunny and inkinelle.
Profile Image for Helena.
792 reviews20 followers
June 17, 2026
My eldest daughter adores this series.
Displaying 1 - 18 of 18 reviews