|MadSci Network: Earth Sciences|
Drilling for oil offshore requires a great deal more financing than does land drilling. The reason for drilling offshore, that's where the oil is. Check out this web site. http://school.discovery.com/homeworkhelp/worldbook/atozscience/p/425600.htm l Petroleum drillers make every effort to keep the crude oil from reaching surface waters. They spend a great deal of finances to undertake a large project. They can neither afford the losses of crude or the consequences of a large spill. I understand your reprehension for the oil companies, but they are making efforts to deliver products in an environmentally safe manner.
Try the links in the MadSci Library for more information on Earth Sciences.