Page 189 - DK Children's Encyclopedia

Oceans and seas SEE ALSO

▸ ▸ Coral reefs p.74
▸ ▸ Water
More than two-thirds of our planet is covered by oceans pp.120–121
and smaller seas. They contain most of the world’s water ▸ ▸ Exploration
and are full of life of all shapes and sizes. Some of the pp.180–181

deepest parts of the ocean have still not been explored. ▸ ▸ Seashore p.220
▸ ▸ Tides p.254

Ocean depths Sunlit zone
Oceans are divided into different zones This zone receives
according to depth. The deepest part is lots of sunlight and is
more than 6 miles (10 km) the layer of the ocean
that contains most
beneath the surface. plants and animals. Arctic Ocean

Atlantic
Ocean Pacific
Ocean
Pacific Indian
Ocean Ocean
Southern Ocean
Twilight
zone The world’s oceans
Little sunlight reaches The Earth has five oceans. The largest
the twilight zone. Many
creatures that live here is the Pacific, which holds half of the
have body parts that world’s salt water. The smallest is the
glow in the dark. Arctic Ocean, which is partly frozen.

Ocean smokers
Dark zone In places, hot water bursts from the
The dark zone is seabed, creating chimneylike structures
deeper than 3,300 ft known as smokers. The water that comes
(1,000 m). The water is out from the smokers can be white or
dark apart from some black, depending on what minerals the
animals that glow water around them contains.
with light.

Deep-sea zone
In the deepest part
of the ocean, weird
creatures live in
total darkness.

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