Off-shore Oil seeps detection in the Northern Gulf of Mexico by means of Airborne and Satellite Remote Sensing The aim of this work is to identify natural oil-seeps in the Northern Gulf of Mexico by means of satellite and airborne imagery. In offshore sedimentary basins, a certain quantity of confined hydrocarbons may migrate from the depth to the sea surface, thus generating oil-slicks. It is possible to identify these slicks by means of Synthetic Aperture Radar (SAR) and multispectral imagery under ambient sun glint. RADARSAT-1, UAVSAR and MODIS imagery from different dates was evaluated, and the data was transferred to a Geographic Information System (GIS), which allowed the identification of oil-slicks due to the low backscatter values on the surface of the sea. The analysis of those oil-slicks identified in one area on different dates made it possible to define the possible location of sixty-three (63) oil-seeps in the surveyed area. SAR and MODIS imagery is an excellent tool to detect oil-slicks, while the use of images of different dates make it possible to identify the possible location of the seeps.