A children’s nonfiction book about ocean habitats that places the reader in the diving mask of an ocean explorer. Young adventurers will take an intrepid journey around the world to five incredible oceans. Starting in the Arctic, readers will meet polar bears and narwhals in Svalbard's icy waters before diving down to the world’s largest cold-water coral reef. The journey continues to some of the least explored ecosystems on Earth. Discover flying fish in the Sargasso Sea; the smoking underwater chimneys of Kairei Vent Field in the Indian Ocean; the colorful coral of the Great Barrier Reef; towering icebergs in Antarctica's Ross Sea; and learn what’s at the bottom of the Challenger Deep. Using clever die-cuts and gatefold pages, this colorful volume explains how underwater volcanoes turn into islands; the difference between a sea and an ocean; how the Moon affects the tides; and reveals some astonishing species, including deadly jellyfish and a spooky vampire squid that glows in the dark. Written by children's nonfiction author Rachel Elliot, There's an Ocean in This Book features fascinating facts and immersive descriptions in combination with novelty flaps, expedition logs, and infographics—all to bring the world's oceans to life.