In 1942 U boats sunk 89 ships off the coast of Cape Hatteras. Over 30 of them were tankers. All carried fuel oil. Has there ever been a report of a related environmental disaster? Much of the oil washed onto North Carolina and Virginia beaches and into Chesapeake Bay.
There are approximately 600 natural oil seeps in the Gulf of Mexico, discharging 1 to 5 million barrels, not gallons of crude oil per year-every year forward and back. Exxon Valdez spilled 11 million gallons - not barrels of crude.
The largest oil seep in the Western Hemisphere are in the Santa Barbara Channel. One 6 mile stretch is estimated to have discharged about 90,000 barrels per year for centuries!
I'm not trying to minimize the damage done by the criminal activities of Exxon and BP. I'm putting it in perspective. Enviro Loons care nothing about the reality of damage done by the oil industry. It might get in the way f their irrational hand wringing.
From memory...oil discharge from natural disasters amounts to about 2% of oil spilled into the world's oceans. About 60% is from oil seeps and the balance is rain water contaminated runoff and oil spilled by all watercraft from normal operations.
The environmentalists and media focus on the tanker/barge spills because they can exploit the disaster. When was the last time you saw environmentalists on the beach at Santa Barbara protesting the ongoing oil and methane spill? Not much news there...;)