The planet is approximately 71% water and contains (5) five oceans, including the Arctic, Atlantic, Indian, Pacific and Southern.

(deepest oceans and seas)

#1 Pacific Ocean (35,837 ft) (10,924 meters)
#2 Atlantic Ocean (30,246 ft) (9,219 meters)
#3 Indian Ocean (24,460 ft) (7,455 meters)
#4 Caribbean Sea (22,788 ft) (6,946 meters)
#5 Arctic Ocean (18,456 ft) (5,625 meters)
#6 South China Sea (16,456 ft) (5,016 meters)
#7 Bering Sea (15,659 ft) (4,773 meters)
#8 Mediterranean Sea (15,197 ft) (4,632 meters)
#9 Gulf of Mexico (12,425 ft) (3,787 meters)
#10 Japan Sea (12,276 ft) (3,742 meters)

Note that official depths for the Southern Ocean are not available at this time.

Ocean Sizes and more here

http://www.worldatlas.com/aatlas/infopage/oceans.htm

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