Glossary

The ocean is the entire body of salt water that covers more than 70 percent of the earth's surface. There are different divisions of the ocean, including the Atlantic, Pacific, Indian, Arctic and Antarctic oceans*.

Picture source:

http://www.nwfsc.noaa.gov/research/divisions/fed/images/ocean_river.jpg

http://media-cdn.tripadvisor.com/media/photo-s/01/0b/c8/e6/ocean-beach.jpg

http://www.myschoolhouse.com/courses/T/2/Images/world.gif

*adapted from http://www.answers.com