Hawksbill turtles nest year round on the Arnavon Islands, with a peak season that occurs from May - December. Green turtles also nest here in low numbers, with a peak from January-March. Since the establishment of the ACMCA the number of hawksbill turtle nests that are laid annually has more than doubled.  Today around 1200 hawksbill turtle nests are laid every year in the Arnavons group.  Tagging studies have shown that many of the hawksbill turtles that nest on the Arnavons spend most of their life foraging on the Great Barrier Reef in Australia, making the 2000 km journey to the Arnavons in order to nest at five to seven year intervals.