Table of Contents Life Underwater Hold the Salt 4 Freshwater Fish Food 12 The Great Lakes 14 Fish Facts 16 Freshwater Threats and Conservation 18 Glossary 23 Index 24
Chapter 1 Life Underwater Hold the Salt Millions of Earth’s most exotic creatures live in a place where humans wouldn’t survive underwater EARTH'S WATER 3 Saltwater Freshwater 97 SURFACE 4 Water Water Everywhere Water covers 70 percent of Earth But less than three percent of it is freshwater The rest contains high levels of salt including all the water in the oceans
Fish either live in freshwater or saltwater Freshwater fish live in scattered habitats like lakes rivers ponds and streams while saltwater fish live in the ocean Freshwater fish represent more than 4 out of 10 of all the fish species on Earth Despite having far less water to live in than ocean fish freshwater fish are amazingly diverse animals 5
