MARINE BIOMES

1
MARINE BIOMES
Coral Reefs
Coral reefs are widely distributed in warm
shallow waters .They can be found as barriers
along continents (e.g., the Great Barrier reef
off Australia), fringing islands, and atolls.
Naturally, the dominant organisms
2
Marine regions cover about three-fourths of the
Earth's surface and include oceans, coral reefs,
and estuaries. Marine algae supply much of the
world's oxygen supply and take in a huge amount
of atmospheric carbon dioxide. The evaporation of
the seawater provides rainwater for the land
Oceans
3
Estuaries are areas where freshwater streams or
rivers merge with the ocean. This mixing of
waters with such different salt concentrations
creates a very interesting and unique ecosystem.
Estuaries
4
Estuaries trap nutrients and sediment that is
carried from the land by rivers and from the
ocean by tides. Estuaries are characterized by a
constant mixing of these nutrients with the rise
and fall of the tide. These conditions create an
enormous amount of plant and animal life.
Estuaries are therefore one of the most
productive types of ecosystems on earth.
5
CLIMATE
The average temperature of all oceans is about 39
degrees . But the oceans in different parts of
the world can have very different climates!
Tropical oceans, which are near the equator, are
warm and clear on the surface. The equator is an
imaginary belt which circles the earth and
divides it into two halves. The areas of land and
water which are near this belt are called the
tropics, and are always warm. But in the cold
polar regions of the far north and far south, the
ocean is so cold that its' surface is frozen!
Huge blocks of ice called ICEBERGS drift in these
seas. The sun's heat warms only the surface of
the water. Deep down, oceans everywhere are cold,
dark, and still.
6
Here Are Some Pictures
7
THANKS FOR WATCHING

• Made by Christopher .G