Oceans and seas are habitats for millions of animals and plants. Life on land depends on the oceans. Sea creatures provide food for billions of people around the world. The waters of the oceans shape the weather, the land, and the planet's temperature. But human activity is endangering some of the world's most unique habitats. Warmer ocean temperatures due to climate change are affecting food webs both in the water and on land, and may be responsible for an increase in the number of damaging storms around the planet. This fascinating book uses case studies to explore the causes and effects of the destruction of ocean habitats and their wildlife and the ways in which people can reduce their impact on these life-giving bodies of water.