what should we do, when oil tanker sank beside us

What should we do,when oil tanker sank beside us?

Takatoshi AKAI

JOCV/231

KWS/Malindi Marine Park

Disaster in the past

• In 24 Mar 1989 mid night• North east of Prince William Bay in Alaska• Tanker named “Exxon Valdez” (200 thousand ton: 200,000 ton)• 1/5 oil (38,000 Kilo Litter) outflow

Effect of disaster

• 250 thousand (250,000) sea birds dead

• Mammals such as sea otter suffer a great loss

Choose 1 solution!!

①Result of burn oil

• All creatures in the field

are dead!!

②Result of using chemical

• Chemical effected to

other creatures and killed them.

③Result of using high pressured hot water to wash away

• Creatures, which somehow survived on the rock, killed and washed away by high pressured hot water.

• Also removed oil flow into sand and killed shells and lungworm.

I'm choking…

Oil

Miss Shell

④Result of using cold water to wash away

• Removed oil flow into sand and killed shells and lungworm.

I`m choking…

Oil

Miss Shell

⑤Result of remove oiled sand and mud

• Removing oiled sand and mud

is also removing all organism in the area.

Therefore, this area will become dead land.

⑥Result of spread manure to ↑ microbe, which break down oil

Oil composed by hydrocarbon.1.Use microbe to break down oil.2.Nitrogen and Phosphorus increase by

microbe activities.3.So, help microbes, we spread manure.

MoguMogu

Mogu

How much did it cost to recoverin Prince William Bay?

• 　 Time period：More than 3 years

• 　 Cost：More than $20 hundred million

$2,000,000,000

What i s the cause of out f low oi l?

Cause 1

Spill out from factory and cities

Cause 2

Spill out from ballast in oil tanker

Cause 3

Spill out from

accident of

oil tanker

Cause 4

Spill out

accidently

such as Gulf war

Solution

① Stop using oil materials

② Shift to use renewable resources

Conclusion

• We are still depend on energy from oil.

• If some oil tanker sank accidently beside our sea, we should take certain action to avoid loss of bio diversity.

• Also we should shift from oil to renewable resources, then accident will be reduced.