Great Barrier Reef: Warmer seas 'turning turtles female'

Green sea turtles' gender is temperature dependent and warmer seas are turning too many of them female, according to a study.

Research - carried out on a group of 200,000 turtles in the northern Great Barrier Reef - found this poses a threat to the population of the endangered reptile.

The study was carried out by the National Oceanic and Atmospheric Administration, California State University and Worldwide Fund for Nature Australia.