There are 10 books in the Emily Windsnap series. The newest book is Emily Windsnap and the Crystal Caves which came out in 2025.

Emily Windsnap lives on a boat, but her mother has always been oddly anxious to keep her out of the water. It is only when Emily has her first school swimming lesson that she discovers why: as soon as she gets into the water, she grows a tail!

Soon Emily…

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2
Emily Windsnap and the Monster from the Deep

By Liz Kessler , Sarah Gibb (illustrator) ,

Book cover of Emily Windsnap and the Monster from the Deep

Emily Windsnap is thrilled to arrive at her new home - a secret island near the Bermuda Triangle where humans and merfolk live together, and where being a girl who grows a tail as soon as she enters the water isn't a problem. But, being Emily, she can't resist exploring…

3
Emily Windsnap and the Castle in the Mist

By Natacha Ledwidge (illustrator), Liz Kessler ,

Book cover of Emily Windsnap and the Castle in the Mist

The magic ring that Emily Windsnap - half mermaid, half ordinary girl - finds buried in the sand belongs to Neptune, and he wants it back. But the ring, once on, won't come off, and an angry Neptune sends Emily's boat spinning away across the sea. When it comes to…

4
Emily Windsnap and the Siren's Secret

Book cover of Emily Windsnap and the Siren's Secret

Emily is delighted when her family returns to Brightport, but their attempts to follow Neptune's orders to bring humans and merfolk together seem doomed.

Thrown out of mermaid school and scorned by her old enemy, Mandy Rushton, Emily goes in search of the lost sirens who were banished by Neptune…

5
Emily Windsnap and the Land of the Midnight Sun

By Liz Kessler , Natacha Ledwidge (illustrator),

Book cover of Emily Windsnap and the Land of the Midnight Sun

Emily and Aaron are sent on a top secret mission by King Neptune. The king has been having nightmares he doesn't understand and he knows only that Emily and Aaron must go to the Land of the Midnight Sun to avoid catastrophe. But when the friends arrive in this icy…

6
Emily Windsnap and the Ship of Lost Souls

By Liz Kessler , Sarah Gibb (illustrator) ,

Book cover of Emily Windsnap and the Ship of Lost Souls

Welcome back to the world of Emily Windsnap!

A school trip to a beautiful island plunges Emily and her friends into a new adventure. What is the secret of the mysterious ship that sometimes appears on the horizon, and does the answer lie in the lost city of Atlantis?

Emily's…

7
Emily Windsnap and the Falls of Forgotten Island

By Liz Kessler , Erin Farley (illustrator),

Book cover of Emily Windsnap and the Falls of Forgotten Island

Meet Emily Windsnap! Ordinary girl on land, magical mermaid in water... Bubbling with magic, fun, friendship and new heights of adventure, a must-read for girls aged 8-12.

Emily Windsnap, an ordinary girl on land and a magical mermaid in water, is overdue a break from excitement - as her exhausted…

8
Emily Windsnap and the Pirate Prince

By Liz Kessler , Erin Farley (illustrator),

Book cover of Emily Windsnap and the Pirate Prince

Feisty girls take to the helm of a pirate ship in this new Emily Windsnap adventure! Ordinary girl on land, magical mermaid in water... Bubbling with magic, fun, friendship and oceans of adventure. A must-read for girls aged 8+.

When Emily Windsnap's boyfriend Aaron is captured by pirates there's only…

9
Emily Windsnap and the Tides of Time

By Liz Kessler , Erin Farley (illustrator),

Book cover of Emily Windsnap and the Tides of Time

The brand new ninth book in the five-million-copy-selling Emily Windsnap series by Liz Kessler. Bubbling with magic, fun, friendship and oceans of adventure.

Emily Windsnap has returned home to Brightport, but she can't help but miss the fantastical adventures she's been having on pirates ships and tropical islands. And Brightport…

10
Emily Windsnap and the Crystal Caves

By Liz Kessler , Erin Farley (illustrator),

Book cover of Emily Windsnap and the Crystal Caves
Join the entire gang of mer-friends—and celebrate twenty years of Emily Windsnap—in this epic and masterfully crafted adventure by New York Times best-selling author Liz Kessler.

Adventure always seems to find Emily Windsnap! So when she discovers a bangle with a unique crystal under Rainbow Rocks, she and her friends…