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8. Amoco Cadiz

Oil Spilled: 1.6 million barrels
Cost in 2010: $136 million

In March 1978, the oil tanker Amoco Cadiz ran aground after its rudder was damaged in a winter storm, and although crews were alerted to the impending disaster, they were unable to halt the ship. According to the Mariner Group, the ship spilled 1.6 million barrels of crude oil near Portsall, France and the resulting slick eventually affected 125 miles of coastline.

Photo: Jean-Pierre Prevel | AFP | Getty Images