- Illustrated Chapter Books
- Ages 6–9
- Comedy

Super Happy Magic Forest and the Deep Trouble
Book 3 of 4 in Super Happy Magic Forest Chapter BooksView the full series
Part of the Super Happy Magic Forest universeOpen the collection
The Super Happy Magic Forest crew are going underwater, and the ocean is even more chaotic than the forest. The third chapter book takes the gang somewhere completely new and is the series at its most visually inventive.
- Best for6–9
- FormatIllustrated
- Length192 pp
- Read aloud~2 hr45 min
The vibe
What it’s like.
Style
- Conversational
- Comedic
- Onomatopoeic
Tone
- Funny
- Silly
- Exciting
- Adventurous
- Whimsical
- Absurdist
- Irreverent
Themes
Experience meters
What’s it about?
The story.
Something has gone wrong, and the only solution involves going underwater. Blossom, Gumball, Trevor, Herbert, and Hoofius find themselves beneath the waves, in a world of merpeople, sea creatures, and underwater mysteries that turns out to have just as many problems as the forest they came from, only wetter. Matty Long's third chapter book is the most visually distinctive entry in the chapter book series, taking full advantage of the underwater setting for a completely different colour palette and a new set of visual jokes. The cast of underwater characters adds fresh comedy dynamics while the familiar group continues to be its excellent, bickering, occasionally competent self. The self-acceptance thread in this book, around one character's particular insecurity and how the group responds, is lightly handled but adds slightly more emotional weight than the earlier entries. Best read in sequence.
Fit check
Right for your child?
Where it lands by age
- 1
- 3
- 5
- 7
- 9
- 11
- 13
- Best fit · 6–9
- Read aloud · 5–9
- Independent · 6–9
Prose load
Moderate
Visual support
High
Reluctant-reader friendly
Very
Read-aloud quality
Strong
Works well for
- Reading aloud
- Reading together
- Gift-buying
- Reluctant readers
Nothing in the book is likely to concern most parents. Safe to recommend without preview.
Bedtime suitability
2 / 5 · Better outside bedtime
Sensitive-child
4 / 5 · Good fit
Graphic intensity
2 / 5 · Mild
Best for
- Laugh out loud
- Reluctant readers
- Visual comedy
- Gift book
- Gateway chapter book
Avoid if
No common reasons to avoid this one — a rare clean sweep on the sensitivity flags.
Particularly good for children who are…
- Reluctant reader
- Struggling with reading
- Interested in art and creativity
- Making friends
- Low self esteem
In the classroom
How it works in school.
A funny fantasy-quest series — a reluctant-reader pleaser and classroom-library staple.
A book children love that happens to support school — never a stand-in for the texts a class is taught with. Reviewed for the classroom · June 2026.
Why it lands
Why they love it.
Why kids love it
The specific delight is underwater chaos — the forest gang plunged below the waves, merpeople and sea creatures and seaweed, the same five misfits trying to be heroes in a completely wrong setting. The Super Happy Magic Forest where everyone gets wet.
- Secret world
- Adventure and freedom
- Magic powers
- Surviving danger
Why parents love it
The Super Happy Magic Forest underwater volume — fresh palette, merpeople, the established ensemble navigating somewhere completely new. Useful for a child mid-series who wants the world to expand. Visual density at maximum.
- Shared humour
- Nostalgia
- Conversation starter
- Quick to read
In the series
Super Happy Magic Forest Chapter Books.
4 books · open the series →
About the author & illustrator
Matty Long.
If you liked this
Three ways out of this book.
If you liked this, try…
Lateral matches. Same shelf, different texture.
Come into this from…
Easier or preparing reads — perfect lead-ins.
Where to go next…
Escalation reads — a step up in scale, silliness, or stakes.
More like this…
Books that share themes and topics with this one.
Buy or borrow
Pick up a copy.
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