The Department of the Interior (DOI) manages ocean energy and mineral resources, including oil, natural gas, wind, and geothermal resources. Federally regulated offshore oil and gas projects currently account for 26% of the nation's domestic oil production and about 16% of domestic natural gas production. In addition to generating these domestic energy supplies, federally regulated offshore energy projects account for significant public receipts, including approximately $6.5 billion in 2011. This book provides an overview of the DOIs reform, reorganization and offshore energy management with a focus on ocean energy programs and oil and gas management.