Image shows side scan sonar lines merged together to form a view of the sea floor. The white lines are directional guides for the boat captain to follow in order to collected additional side scan data from locations that have gaps in the image.
 Sonar Lines
Image courtesy of Amy Gusick, Sea of Cortez 2110 Expedition. Download larger version (jpg, 4.7 MB).

Image shows side scan sonar lines merged together to form a view of the sea floor. The white lines are directional guides for the boat captain to follow in order to collected additional side scan data from locations that have gaps in the image.