By: Naveen Prasad Yerra subbarayudu
AGENDA
• Introduction • Types of pollution Cause Effects
INTRODUCTION
• Harmful foreign contaminates entry in to ocean like chemicals, particles, industrial, agricultural and residential waste, noise. • Creates a disturbance in the ocean chain • Major portion of marine pollution are land based
TYPES OF MARINE POLLUTIONS
Pollutants Entering The Oceans
3% 10% 20% Air Pollution Farm Runoff Litter Sewage 5% 20%
10%
Offshore Oil
Industrial Waste-Water Maritime Transportation 25% Noise 7%
SEWAGE AND AGRICULTURE RUNOFF
• • • • Counts up to 45% of entire marine pollution Causes disease outbreaks Contributes to eutrophication Phytoplankton bloom reduces light penetration
INDUSTRIAL WASTE
• Counts up to 10% of the total marine pollution. • Its a potential threat which can cause gradual or immediate environmental disaster. • Toxins. Effects & Disaster • Mutation • Minamata Disease.
MINAMATA DISEASE
• Discovered in the year 1956 • Cause by release of methyl mercury in sea water by fertilizer manufacturer Chisso . • Killed nearly 5000 people which was not accounted officially. Symptoms • Ataxia • Numbness in the hands and feet • Muscle weakness,
• • • • •
Narrowing of the field of vision Damage to hearing and speech Insanity Paralysis Coma and death.
AIR POLLUTION
• Counts up to 20% of the total marine pollution caused • Increases in carbon emission • Acidification • Increase in temperature and sea level
MARITIME TRANSPORATION
• Counts up to 10% of the total marine pollution caused Causes • Dumping from cargo ship and airplanes. • Ballast water discharge. • Oil spills
NOISE
• Counts up to 3% of the total marine pollution caused Causes • Navy practices • Oil exploration and fishing ship. • Deep sea mining
Effects (accidents) • Nearly 50 dolphins were killed in Navy practice in Australia.
OFFSHORE OIL
• Counts up to 5% of the entire marine pollution