Sibéal Pounder previously worked for the Financial Times, where she researched the How To Spend It section and wrote the For Goodness' Sake column - interviewing everyone from Veronica Etro to Vivienne Westwood. As well as Bad Mermaids, she writes about fabulous witches and feisty fairies in Witch Wars, her first and much loved series for Bloomsbury, which was shortlisted for the Waterstones Children's Book Prize and the Sainsbury's Children's Book Award.

Jason Cockcroft graduated from Falmouth School of Art in 1994 and has been working as an illustrator of children's books ever since. He won the Blue Peter Book Award for his work on Geraldine McCaughrean's retelling of A Pilgrim's Progress and was the illustrator on the original covers of the final three Harry Potter novels.

Mermaids Beattie, Mimi and Zelda are enjoying a summer on land with legs when they receive a strange CRABAGRAM ordering them to return home at once. Some seriously BAD MERMAIDS are on the loose and the girls are the only ones who can stop them.

If they're going to save the day, they'll need answers. And a clam car. Definitely piranha-print nail polish. Possibly not the talking seahorse.

CAN THEY DO IT?

Filled with magical mysteries, fabulous fashion, and a serious piranha problem, Bad Mermaids brings a whole new twist to the underwater world of mermaids. If you enjoyed The Little Mermaid, you'll love this too!

Twenty thousand laughs under the sea. Dive into a fin-tastic, madcap adventure that's funnier than being tickled by a giant octopus. Bad Mermaids - swimming with snarks

From the author of the brilliantly funny Witch Wars comes a brand new series set in an underwater shell-studded metropolis. Get ready for some feisty mermaids, evil piranhas and magical mystery mayhem

Funny, fishy and FANTASTIC (and that says a lot coming from someone with a mermaid fear)

Bad Mermaids is tons of fun: stylish, packed with laughs and boasting a fab talking seahorse. The Little Mermaid meets Gossip Girl

You'll laugh your tail off - another winner from our favourite author

Sibéal has done it again. Bad Mermaids is a fishy romp through a hilarious new world, rich in the kind of gorgeous detail that young readers love. Crabagram just in - Bad Mermaids is hilarious!