Global warming is threatening "feminization" of green sea turtle, a study has said suggesting that by 2100 up to 93 per cent of the hatchlings of this species could be females. The sex of turtle hatchlings is determined by temperature and, currently, approximately 52 per cent of green sea turtles (one of the seven species of marine turtles) are females, according to a study published in the Global Change Biology journal on Wednesday.

The study by the British University of Exeter and the Portuguese Marine and Environmental Sciences Centre indicated that with the scenario of warmer temperatures predicted by the Intergovernmental Panel on Climate Change (IPCC), between 76 and 93 per cent of the offspring of those sea turtles would be females.