Where does garbage in the ocean come from, and how can it harm ocean animals? How do poisonous chemicals end up in our oceans? What is an oil spill, and how does it hurt wildlife and seashore habitats? Polluted Oceans introduces young readers to the issues of pollution due to the dumping of garbage, chemicals, and other things into our planet's seas. It also gives students plenty of ideas for ways that they can be part of the campaign to help keep our oceans clean and safe for the future. Filled with information perfectly suited to the abilities and interests of an early-elementary audience, this colorful, fact-filled volume includes grade-appropriate activities and experiments, critical-thinking questions, and fascinating fact boxes to keep the pace lively and interactive.