Fish play an important role in water environments. They feed on nearly all types of plants and animals, they provide a home for other organisms such as bacteria and crustaceans, and they are eaten by many other types of animals. Their vast numbers and diversity also contributes to their importance. Fishes are the most abundant vertebrates in terms of both species and individuals. It is estimated that there are approximately 22,000 species of fish which make up about half of all species of vertebrates on eartha little more than half of these species are marine (58%).
Point Reyes National Seashore protects a portion of the watershed necessary to ensure safe migration and spawning of coho salmon and steelhead trout. This protection is necessary as both species have been directly impacted by human activities and development. Healthy creeks are one step toward increasing and maintaining their population numbers. Their true hope for survival lies in changing human attitudes, behaviors, and priorities.