The male to female ratio of turtles is always a delicate balance. Around the Howick Group of Islands, in the Great Barrier Reef, alarming changes are taking place in the green turtle hatchlings produced on the beaches.


WWF-Australia researchers contributed to findings that, due to rising temperatures, 99% of juvenile turtles at the Howick Group of Islands have now been identified as female.

The sex of green turtles is determined by the incubation temperature of the eggs. Since the eggs are buried in the sand, the warmer the weather, the warmer the sand, and the higher probability of females being born.

Without more males, the population could eventually crash.

There are solutions to help restore the balance... WWF-Australia has partnered with Koala too trial practical methods to cool the sand temperature of green sea turtle and hawksbill turtle nests on Milman Island in the northern Great Barrier Reef. See below to find out more.

Raise your voice for turtles