Within this community there are thousands of mammals, fish, and plants that are living in the waters of earth, and each one plays its own role. ... In each part there are several different species both large and small. ... Dams block the streams which do not allow the fish to migrate. ... Humpbacks embark on long seasonal migrations, traveling more than 3,100 miles (5,000 km) with little to no rest. ... Orcas prefer coastal areas, and are almost always seen within 500 miles (800km) of the shoreline. ...

• Word Count: 1537
• Approx Pages: 6
• Grade Level: High School