Written by Dr. Helen Scales. Illustrated by Aaron John Gregory
 
In this book, Scales shares the secrets of fish, unhitching them from their reputation as cold, unknowable beasts and reinventing them as clever, emotional, singing, thoughtful creatures, and challenging readers to rethink these animals. She takes readers on an underwater journey to watch these creatures going about the hidden but glorious business of being a fish. Their way of life is radically different from our own, in part because they inhabit a buoyant, sticky fluid in which light, heat, gases and sound behave in odd ways. They've evolved many tactics to overcome these challenges, to become megastars of the life sun-aquatic. In doing so, these extraordinary animals tell us so much about the oceans and life itself. Our relationship with these scaly creatures goes much deeper than predator versus prey. Fish leave their mark on the human world.

As well as being a rich and entertaining read, this book will inspire readers to think again about these animals, and the seas, and to go out and appreciate the wildness and wonders of fish, whether through the glass walls of an aquarium or, better still, by gazing into the fishes' wild world and swimming through it.