George Wight Jr. - Volunteer at Armada GP

1
AWARENESS ON MARINE ISSUES, GLOBAL WATER QUALITY
At Armada Institute George Wight Jr. joined
awareness camp of marine issues, global water
quality, where he performs various task related
to marine cleanliness.
2
Introduction

• Oceans cover about 71 of the Earths surface.
• They play an important role in the chemical and
  biological balance of the life on the earth.
• They are vital to our food security, commerce and
  transportation.
• But human activity has troubled the health of
  ocean.
• The habitats of marine mammals and fish have been
  degraded severely, with pollution responsible for
  the mass deaths of fish, mammals and corals.

3
Marine pollution

• It is defined as the discharge of waste
  substances into the sea resulting in harm to
  living resources, hazards to human health,
  hindrance to fishery and impairment of quality
  for use of sea-water.
• Marine pollution is associated with the changes
  in physical, chemical and biological conditions
  of the sea water.

4
POLLUTANTS SOURCES AND THEIR EFFECTS

• Pollutants can simply define as the materials
  which cause pollution. The following are the
  important pollutants that cause the marine
  pollution.
• Sewage
• Pesticides
• Plastic wastes
• Metallic wastes
• Oil
• Heat
• Radioactive waste
• Dredge spoil.

5
SEWAGE

• Sewage may be entering the sea
• - By direct drainage
• - From inland towns and industries.
• - Tipping at sea from ships.
• Detrimental effects of sewage include
• - Eutrophication.
• - Deoxygenating.
• - Foul deposits, Reduced salinity, Infection and
  toxic residues.

6
PLASTIC WASTES

• The mass of plastic in the ocean may be as high
  as one hundred million metric tons.
• Many animals that live on or in the sea consume
  flotsam by mistake, as it often looks similar to
  their natural prey.
• Plastic pollution can afflict land, waterways and
  oceans. It is estimated that 1.1 to 8.8
  million tons of plastic waste enters the ocean
  from coastal communities each year.
• According to the United Nations, at least 800
  species worldwide are affected by marine debris,
  and as much as 80 percent of that litter is
  plastic.

7
THANK YOU
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