Marine Wildlife

Marine Turtle Nest Incubation and Climate Change

Rising temperatures from climate change threaten marine turtle populations by skewing sex ratios and affecting nest success, with profound welfare and conservation implications.

Key Facts

Turtle sex is determined by incubation temperature - higher temperatures produce more females
Green turtles at some reefs now produce over 99% females due to warming
Extreme heat events cause nest mortality and embryo death
Nest shading and cooling are being trialled at some beaches
Conservation efforts include nest relocation to cooler, protected sites

Welfare Considerations

Thermal stress during nest incubation kills embryos and produces hatchlings that are physiologically compromised. The extreme sex ratio skew threatens population viability. Individual hatchlings dying from overheating experience suffering, and the scale of potential population collapse represents an enormous future welfare concern.

What You Can Do

Support marine turtle conservation organisations working on climate adaptation
Reduce personal carbon footprint to mitigate warming
Advocate for policies protecting nesting beaches from development