How many oceans are there in the world?
There are 5 oceans and 7 seas.
What is the difference between an ocean and a sea?
The seas are smaller than the oceans and are connected by an ocean and land.
What is the largest sea?
The Philippine Sea is the largest sea the Baltic Sea is the smallest.
What is the largest ocean?
The Pacific ocean is the largest ocean.
What is the name of the oceans?
The Pacific Ocean, Atlantic Ocean, Indian Ocean, Southern Ocean and the Arctic Ocean.
What does the name the World Ocean mean?
It is all the oceans of the world connected together as one.
Are the oceans freshwater or are they saltwater?
The World Ocean contains salt with not suitable for the majority of life on earth for use.
THE 10 MOST IMPORTANT ISSUES FACING THE WORLD OCEAN
1-PLASTICS
A-More the 8,000,000 pieces of plastic enter the oceans every day.
B-60% to 90% of the debris entering the oceans.
C-Plastics do not degrade and kill birds, fish and mammals at a rate of over 1,000,000 per year
D-Which countries put the most plastics in the ocean they are number 1 China, Indonesia, Philippines, Vietnam, Sri Lanka, Thailand, Egypt, Malaysia, Nigeria and number 10 Bangladesh.
E-There are 5 major patches of plastics in the world ocean.
2-TRASH
A-8,000,000 metric tons of trash enter the world ocean each year.
B-80% of the trash in the world ocean is from land based sources humans, industry and waste management sewage.
C-20% of the trash in the world ocean comes from cruise ships, fishing and shipping industries.
D-The most common trash items found at beach cleanups are cigarettes and filters along with food wrappers and containers.
E-At the bottom of the oceans they have found plastic bags, fishing equipment glass bottles, shoe and tires
3- POLLUTION
A-Pollution kills more the 1,000,000 sea birds each year.
B-There are dead zones created from pollution where no plants and marine life can live.
C-One truck load of trash enters the oceans each minute.
D-Over 2 billion kilograms of trash enter the world ocean each year.
E-Air pollution harms the oceans as well as the air the two are connected together.
4-OVERFISHING
A-Fishing vessels with new technologies can catch more fish than ever imagined.
B- In only the past 55 years around 90% off the oceans natural predators have been removed changing the balance of life.
C-Overfishing is not new but more effective it has been going on since the early 1800s.
D-Fishing with large nets catch much more than is intended.
E-Fish farming requires more natural fish feed to produce than nature it will devastate many smaller species.
5-UNSUSTAINABLE AQUACULTURE
A-More than have of the seafood eaten in the world comes from aquaculture.
B-China is responsible for 61% of farmed seafood and Asia is responsible for 91% of farmed seafood worldwide.
C-Shellfish are the easiest to farm as they feed themselves.
D-In the next 10 years fish farming will grow by 50% as the earths population increases.
E-The most farmed species are shrimp, salmon and seaweeds.
6-MARINE ENGINEERING/OIL DRILLING
A-40% of the world ocean cargo is oil.
B-Offshore drilling create air pollution and increased carbon emissions
C- Oil spills cause the most damage to the environment
D-Sonic turbulences change the balance of fish near oil wells.
E-The combination of effects increase climate change.
7-HABITAT DESTRUCTION
A-Runoffs agricultural and urban example for dumping sewage.
B-Vegatation removal, development and logging clean the land and promote soil erosion.
C- Dredging and bottom trawling disturb the habitats.
D-Sediment suspension result from any forms bottom works and uncontrolled runoffs.
E- Impoundments or barriers restrict the natural flows.
8-ACIDIFICATION AND CORAL BLEACHING
A-Rising acidification threatens coral reefs as corals can not build there skeletons.
B-The fish community is affected and changes in abundance as the coral changes their environment.
C-Caral is composed of calcium carbonate acidification changes this so they can not develop.
D-Acidification disrupts the ecological balance combined with rising water temperatures.
E-Coral bleaching makes coral susceptible to disease.
9-HIGH LEVELS OF MERCURY
A-Organic mercury is a serious threat to human and animal life
B-Mercury is natural in the earths crust activities as mining and oil drilling release mercury to the oceans.
C-Land runoffs lead mercury in streams lead mercury to the oceans and seas.
D-The North Atlantic Ocean has the highest mercury levels in the oceans.
E- Fish have high levels of ingested mercury as mackerel, tuna and bluefish when eaten are toxic to humans as well as drinking water.
10-OCEAN AND SEA TEMPERATURE RISING
A-Ocean warming is accelerating much faster than was expected due to global warming.
B-Most of the heat is trapped in the world ocean.
C-Marine life is being changed and hurt by warming environment.
D-Warming seas make world storms much larger.
E-Ocean and sea levels are rising rapidly and will change how and where humans and animals can survive.