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The surveys are designed to maximize the manatee counts by concentrating on shallow nearshore waters around the state where manatees and their primary food source, sea grasses, are located. Flight paths curve parallel to the shoreline, and the airplane circles when manatees are spotted until a count of the number of animals in each group is obtained. Offshore waters are usually not surveyed. Dolphin and sea turtle sightings are recorded opportunistically. All aerial data are recorded on paper maps and entered into a GIS shapefile for spatial analysis. GIS is a computer software system for representing data spatially and for conducting spatial analyses. Surveys of Collier County were flown twice a month from May 2006 to June 2008. FWC, Collier County and Ocean Conservancy staff members were observers for these flights, and dual observers (two observers, one in the front seat and one in the rear seat) were present on some or all of survey flights. The survey area includes the northern Collier County border south along the coast to Morgan Point and continuing back north to the Collier border. 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