Drilling Deep in the Gulf of Mexico (from 2006) - New York Times

Drilling Deep in the Gulf of Mexico - New York Times: "Every 17 seconds, a small armada of ships trawling 130 miles from the Louisiana coast fire powerful air guns toward the bottom of the sea in a hunt for the next big oil discovery.

The Neptune and three other ships are on a three-month mission to map one of the most remote regions of the United States. The data they collect from the vibrations set off by the guns in the gulf’s deepest waters will help engineers form a picture of some of the world’s newest petroleum prospects."