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#sonar

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Above seafloor expression of a salt dome in the northern Gulf of Mexico. The side scan sonar data is draped over 3D bathymetry data. All of those dark dots in the relatively flat area are old seafloor gas vents (pockmarks). The dark slash in the upper right is likely a fault.

A school of porpoises playing tag with the side scan sonar instrument. The straight to curve lines represent porpoises darting in & out as they attempt to touch the sonar fish. A clear sonar reflection of one is in the lower right corner.

Side scan sonar of a shipwreck on the bottom of a Livingston Parish, LA, waterway. Based on the sonar program it measures approximately 7.72 m (25.33 ft) long by 2.60 m (8.53 ft) wide. The shape is similar to a small river launch with rounded stern.