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1. Shri Krishnaa College of Engineering & Technology
Thirukkanur Road,
Mannadipet,
Puducherry-605501
R.TAMILARSAN. M. Sc., Ph.D.,
Assistant Professor of Chemistry

3. WHAT IS A MARINE POLLUTION?
o Marine pollution occurs when harmful effects
results from the entry into the ocean of
chemicals, particles, industrial, agricultural
and residential waste, noise or the spread of
invasive comes from land.

4. CAUSES OF MARINE POLLUTION
 Most sources of marine pollution are land
based.
 The pollution often comes from nonpoint
sources such as agriculture runoff and wind
blow debris.

5. WAYS OF POLLUTION INPUT
 There are four main types of input of pollution
 Direct discharge of waste into the sea
 Runoff into the water due to rain
 Ship pollution
 Atmospheric pollution

6. Direct discharge of waste into the sea
• Direct discharge of waste into the oceans,
runoff into the wasters due to rain, and
pollutants release from the atmosphere.
• One common path of entry by contaminants to
the sea are rivers.

7. Runoff into the water due to rain
 Surface runoff. Surface runoff is water, from rain,
snowmelt, or other sources, that flows over the land
surface, and is a major component of the water cycle.
 When runoff flows along the ground, it can pick up
soil contaminants such as petroleum, pesticides, or
fertilizers that become discharge or overland flow.

8. Ship pollution
• Over 90 percent of world trade is carried
across the world's oceans by some 90,000
marine vessels. Like all modes of
transportation that use fossil fuels, ships
produce carbon dioxide emissions that
significantly contribute to global climate
change and acidification.

9. Atmospheric pollution
• Over 90 percent of world trade is carried
across the world's oceans by some 90,000
marine vessels.
• Like all modes of transportation that use fossil
fuels, ships produce carbon dioxide emissions
that significantly contribute to global climate
change and acidification.

10. MAJOR IMPACTS OF MARINE POLLUTION
 Eutrophication
Nitrates and phosphates are nutrients that plants
need to grow.
In excessive amounts, however, nutrients cause a
type of pollution called Eutrophication.
 Toxicity
Toxic waste is any unwanted material in all forms
that can cause harm. Many of today's household
products such as televisions, computers and
phones contain toxic chemicals that can pollute
the air and contaminate soil and water.

11. SEA CREATURES AFFECTED BY MARINE
POLLUTION
• Many sea creatures are being affected being
affected by this marine pollution.
• Direct consumption of plastics may sometimes
causes death of creatures.

14. Prevention & Control
 Spills-Detection and Clean up
 Strict discipline
 Emergency plan
 Oil spill clean up equipment