According to my calculations using the numbers above and below we should have 474039 years at the current rate of out flow before all the ocian life gets destroyed
The United States Geologic Survey (USGS) estimates there to be 326,000,000 cubic miles of water on the planet. A cubic mile can hold a little more than 1.1 X 1012 gallons.
The USGS also estimates that 96.5% of that water is in the planets oceans.
X (1,100,000,000,000 gallons per cubic mile)
X (326,000,000 cubic miles)
= 346,049,000,000,000,000,000 gallons of ocean water.
The origional post quoted 200,000 gallons a day of oil spilling out, at 4 quarts per gallon (1 quart of oil makes deadly toxic 250,000 gallons of water for ocian life) thats
800,000 quarts of spill per day which would destroy 200,000,000,000 gallons of water per day.
Now if we take 346,049,000,000,000,000,000 gallons of clean ocean and divide by 200,000,000,000 gallons of water being destroyed by the oil each day day, thats 1,730,245,000 days of continuous flow before we all start to die (~roughly).
So that give us 4740397 years before this spill destrorys us. Or if we look at it another way we would have to blow up about 100,000 more of these oil wells to commit full thourough ocianicide in about 47-50 years. BUT!- this is all just rough caluclations and I'm sure it wont take that much oil to screw up our ecology and "circle of life" to the extent that it may endanger our own species' survival. I have no idea how much it would take to do that, but I'm sure its less than the numbers here.
Either way, I'd say even if we let this go and go and go, it will never kill the world just most of the western Atlantic.