The distribution of the nests of marine turtles on beaches is one of the most important factors for hatchlingsuccess. Beaches with fine sands, moderate slopes and good humidity and drainage, are the main environmentalvariables for ovoposition. The objective of this investigation was to determine the nesting variations of the green turtleduring which the nesting frequency per year, beach morphology and distance from the nests to the tidal line wereregistered. During the nesting seasons, 1 654 nests were registered on 13 beaches, among which significant differencesin the number of nests per month were noted (f= 14.07; p< 0.05). Central beaches displayed major nesting probabilityand included beaches with short distances from the intertidal zone to the supralittoral zone. Dunes were the sites withgreater preference for oviposition, being different from the sandy beaches and the intertidal zone (f=54.68; p< 0.05).Significant differences were found in the location of the nests with respect to the tidal line (t=2.33; p< 0.05), and thegreatest intervals for nesting were between 10 and 24 m from the tidal line. The area displayed beaches with moderateslopes and dunes with an average distance of 22.6 m from the tidal line. This area is the most important nesting sitefor green turtle in the American Continent.