Assessment of Marine Turtle populations is very difficult. Attention is focused on nests and nesting females. Because females rarely nest every year, but more usually at two, three or four year intervals, and because it is not possible to determine what proportion of the total mature female population is at the nest beach in any given year, population estimates are typically not precise. It is further complicated by the fact that nesting numbers on individual beaches can show extreme variation from one year to another. Average nesting female carapace length 80 to 110cm.
Hatchlings emerge mostly at night from eggs buried in beach sand and make their way to the sea.
The Green Turtle forages in shallow, inshore waters. Aggregations of Green Turtles often occur over shallow-water seagrass pastures or other suitable feeding grounds. Migrating Green Turtles may travel 20 to 40km per day. Females do not attain maturity in the wild for 15 to 50 years. After a period of two to five decades, females typically migrate to a nesting beach often used by aggregations of turtles.