CONTENTS Insane Wacky Underwater World 4 Extreme Diving 6 Extreme Underwater Inventions 8 Underwater Treasure 10 Extreme Underwater Animals 12 Extreme Pressure 16 The Mariana Trench 18 Underwater Sound 20 Underwater Volcanoes 22 Underwater Exploration 24 The Ocean Zones 26 Underwater Extremes 30 Glossary 31 Index 32
INSANE WACKY UNDERWATER WORLD Did you know that about 71 percent of Earth is covered in water 4 There is a whole world under the waves From huge fish to hidden treasures our oceans are full of mysteries
What do we actually know about the extreme waters deep down below Let's learn about our insane wacky underwater world 5
