Area Name Avg. Depth Greatest Known Depth sq. mi. ft. Pacific Ocean 60,060,700 13,215 36,198 Mariana Trench Atlantic Ocean 29,637,900 12,880 30,246 Puerto Rico Trench Indian Ocean 26,469,500 13,002 24,460 Sunda Trench Southern Ocean 7,848,300 13,100 23,736 South Sandwich Trench Arctic Ocean 5,427,000 3,953 18,456 N/A ft. Name of Region The Pacific Ocean is derived from the Latin name Mare Pacificum, "peaceful sea.” It is the largest body of water on Earth– at an area of 165.2 million Km squared. This ocean covers about 32% of the Earth's surface and is larger than all of the Earth's land area combined The deepest point is the Mariana Trench some 35,840 feet below sea level The ocean's name, derived from Greek mythology, means the “Sea of Atlas." The Atlantic Ocean is the secondlargest ocean, covering about 1/5 of the Earth's surface. It is the saltiest of the world's major oceans; the salinity of the surface waters in the open ocean ranges from 33 to 37 parts per thousand (3.3 - 3.7%) Endangered marine species include the manatee, and sea lions. The Indian Ocean is the third largest body of water in the world, covering about 20% of the Earth's water surface. The climate north of the equator is affected by a monsoon wind system causing rainy seasons that last for months at a time. The Indian Ocean was the sight of the underwater earthquake that caused the devastating Asian Tsunami of 2004. It is the world’s fourth largest ocean and the latest to be defined. It encircles Antarctica, and its northernmost boundary is defined as the 60° S latitiude. It was voted and accepted as a new ocean by the International Hydrographic Organization (IHO) in 2000, though it has been called the Southern Ocean by mariners for years. May be the site of large oil and gas fields near the ocean and continental margin. It is the smallest of the world's five oceans and the shallowest. Its salinity is the lowest on average of the five major oceans, due to low evaporation, as well as limited outflow to surrounding waters The Arctic Ocean occupies a roughly circular basin and covers an area of about 14,056,000 square km. slightly less than 1.5 times the size of the U.S. Endangered marine species include walruses. The area has a fragile ecosystem which is slow to change and slow to recover from disruptions or damage Identify each of the indicated marine life zones by selecting the correct response _____1. abyssal zone _____2. neritic zone ____3. oceanic zone ____4. pelagic zone _____5. _____6. _____7. _____8. aphotic zone benthic zone photic zone intertidal zone