GLOBAL Ocean

72% of Earth’s surface

Arthur C. Clarke

•“How inappropriate to call this planet Earth, when clearly it is Ocean.”

97% of all the water on Earth

Pacific Ocean

• Largest, deepest oldest ocean• Cover 1/3rd of Earth’s surface• Average depth- 4.3 km• Natural resources: oil, gas, metal nodules,

sand, gravel , fish• Over 25 000 islands

Pacific Ocean

Pacific Ocean

• Deepest sea floor in the world

• 10 911 meters• Deep sea trench for by

the plate tectonic movement called SUBDUCTION

Atlantic Ocean

• 2nd largest, youngest ocean

• Contains oil, gas, placer deposits, sand , gravel, precious stones, metal nodules, placer deposits, fish marine mammals

• Icebergs a natural hazard• Piracy occurs

Atlantic Ocean

• Puerto Rico trench is the deepest part, 8 650 meters deep• Many rivers flow into

the A.O.• Few islands

Atlantic Ocean

Also known for:• Broadest continental shelf• summer and fall hurricanes• The Bermuda Triangle• The Mid- Atlantic Ridge• The shipwreck of the Titanic

Indian Ocean

• 3rd largest , warmest, saltiest ocean• Natural resources include oil, gas, fish ,shrimp,

sand, gravel, placer deposits, metal nodules• High risk of piracy• Known for strong, shifting monsoonal flow of

wind and water

Indian Ocean

• Deepest part is the JAVA Trench, 7 258 m deep

Southern Ocean

• Runs from the coast of Antarctica to 60⁰S

• Very deep, between 4000 – 5000 m

• Large and possible giant oil and gas fields, Mn nodules, sand, gravel, squid, whales, seals, krill

Southern Ocean

• South Sandwich Trench is the deepest part, 7235 meters

• Huge icebergs

Arctic Ocean

• Smallest ocean• Natural resources

include sand, gravel, placer deposits, oil , gas, placer deposits, metal nodules, fish, marine mammals

• Fragile ecosystem• Thinning ice

Arctic Ocean

• mostly ice covered• Mainly surrounded by land• Shallowest ocean• Many icebergs

SEAS

• A large body of salt water, smaller than an ocean that may be partly or nearly surrounded by land

• Examples: Sargasso Sea Caribbean Sea

Mediterranean Sea• Pencil in # in green

GULFS

• An area of water bordering on and lying within a curved coastline, usually smaller than a SEA but larger than a BAY

• Examples : Gulf of Mexico Gulf of Alaska Persian Gulf• Pencil in # in orange

BAYS

• An INLET of the OCEAN or part of the OCEAN bordering on land and partly surrounded by land

• Examples : Chesapeake Bay Bay of Bengal Hudson Bay• Pencil in # in red/pink

STRAITS

• A passageway of water connecting two large bodies of water

• Examples: English Channel Davis Strait Korea Strait• Pencil in # in purple