MIAMI (Reuters) - The Gulf of Mexico oil spill may already be bigger than the massive Exxon Valdez spill in 1989 and could have dumped as much as 13 million gallons (49 million litres) of crude into waters off the U.S. coastline, a Florida oceanographer said on Friday.
Ian MacDonald, a biological oceanographer at Florida State University, said official estimates that 5,000 barrels (210,000 gallons/795,000 litres) have poured into the Gulf each day since the Deepwater Horizon rig exploded two weeks ago were much too conservative.