A children's non-fiction book about ocean habitats that places the reader in the diving mask of an ocean explorer. Young adventurers are taken on an intrepid journey around the world to discover five incredible oceans. Starting in the Arctic, they will explore Røst Reef, the world’s largest cold water coral reef before moving gradually into warmer waters in the Atlantic, Indian and Pacific Oceans, and finally the icy Southern Ocean.

Using clever die-cuts and gatefold pages, the book explains how oceans form, the difference between a sea and an ocean, water zones, tides and currents, and reveals some truly astonishing species, from sea squirts and killer whales to the telescope octopus. Written by children's non-fiction author Rachel Elliot, this book features fascinating facts and immersive descriptions in combination with novelty pull-outs, expedition logs and infographics to bring oceans to life.