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Oceans cover about 70%
of the Earth's surface.
The oceans contain
roughly 97% of the
Earth's water supply.
The oceans of Earth
serve many functions,
especially affecting the
weather and
temperature.
They moderate the
Earth's temperature by
absorbing incoming
solar radiation (stored as
heat energy).
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The always-moving ocean
currents distribute this heat
energy around the globe.
This heats the land and air
during winter and cools it
during summer.
Until the year 2000, there
were four recognized
oceans: the Pacific, Atlantic,
Indian, and Arctic.
In the Spring of 2000, the
International Hydrographic
Organization came up with
a new ocean, the Southern
Ocean.
 There
are also many
seas (smaller
branches of an
ocean); seas are often
partly enclosed by
land.
 The largest seas are
the South China Sea,
the Caribbean Sea,
and the
Mediterranean Sea.
The Pacific Ocean is
the largest of the five
oceans on Earth.
 The name “pacific” has
been derived from the
Latin name “Mare
Pacificum”, which
means “peaceful sea”.
 Pacific Ocean was so
named by Ferdinand
Magellan, a Portuguese
explorer.
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The Equator passes
through the ocean, dividing
it into 2 parts - North Pacific
Ocean and South Pacific
Ocean.
The Pacific Ocean is larger
than all of the Earth's land
area combined.
The Mariana Trench in the
western North Pacific is the
deepest point in the world.
You could fit Mt. Everest
inside and the top would
not stick out of the water.
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The average depth of
Pacific Ocean is 14,000 ft.
There are more than
25,000 islands in the
Pacific Ocean.
Almost the entire rim of
the Pacific basin is
ringed with volcanoes
and earthquake areas.
The Great Barrier Reef in
Pacific Ocean, off the
coast of Australia, is the
longest reef in the world.
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The Atlantic Ocean is the
second largest ocean in
the world.
It is slightly less than 6.5
times the size of the US.
The name 'Atlantic' is
derived from the
legendary island of
“Atlantis”.
Atlantic Ocean was the
first ocean to be crossed
by ship and airplane.
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In South Atlantic, there is a
wide stretch of ocean between
the tips of South Africa and
South America, which causes
huge waves & continuous
strong winds, known as the
"Roaring Forties".
The largest island in Atlantic
Ocean is Greenland.
A triangular area in Atlantic
Ocean, called The Bermuda
Triangle, is held responsible
for mysterious shipwrecks,
disappearances and air
crashes.
The Indian Ocean is
the 3rd largest ocean.
 It’s name is derived
from the country India.
 The Indian Ocean is
the warmest ocean in
the world.
 But, the warm water
resists the growth of
phytoplankton except
for a few spots.
 Therefore, life thriving
in the ocean is limited.
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Indian Ocean transports a
heavy traffic of petroleum and
petroleum products, from the
oilfields of the Persian Gulf
and Indonesia.
The ocean provides major sea
routes connecting the Middle
East, Africa, and East Asia with
Europe and the Americas.
Approximately 40% of the
world's offshore oil production
comes from the Indian Ocean.
Fishing in Indian Ocean has
been restricted to subsistence
level.
The Arctic Ocean is the
smallest ocean.
 It is also the shallowest.
 Throughout the year,
the ocean is largely
covered with a sheet of
sea ice due to very low
temperatures.
 The Arctic Ocean is
nearly completely
surrounded by Eurasia
and North America.
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The Arctic Ocean's cold
sheet of floating ice is
quarters to seals, polar
bears and arctic fox.
The Arctic Ocean's ice
sheet is four times as
large as the state of
Texas.
More fish live along the
edges of the Arctic
Ocean than anywhere
else on the Earth.
The Arctic is the only
place on the Earth where
polar bears live.
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The Southern Ocean is also
named Antarctic Ocean, South
Polar Ocean or Great
Southern Ocean.
Icebergs are a further serious
problem for navigation in this
ocean, especially, during the
Antarctic winter (MayOctober).
The Southern Ocean
surrounds the entire continent
of Antarctica.
It includes the southern
portions of the Pacific,
Atlantic, and Indian Oceans.
The Southern Ocean was
created in the year 2000.