¹     Caption: Workers using high-pressure, hot-water washing to clean an oiled shoreline after the Exxon Valdez oil spill in 1989.
 
²     Part of America the Beautiful is about a "shining sea." What do you think of when you hear those words? A clean, fresh ocean? It is too bad that the ocean is not that clean. Ocean pollution is a big problem.
 
³     The ocean covers 70% of the Earth's surface. The ocean has different layers in it like a big, watery-blue layer cake. These layers are called zones. The top zone has a happy name. It is the sunshine zone. It goes down about 600 feet.

Paragraphs 4 to 9:
For the complete story with questions: click here for printable