Marine Animal Welfare

Marine Turtle Climate Change Thermal Welfare

Rising beach temperatures from climate change are affecting sea turtle sex ratios and nest success, with welfare and population implications.

Key Facts

Sand temperature determines hatchling sex - warmer produces more females
Great Barrier Reef green turtle populations are now producing 99% females
Very high sand temperatures can cause nest failure and embryo mortality
Some populations are shifting nesting timing earlier to cooler periods
Climate adaptation includes beach shading and cooling programs at critical nesting sites

Welfare Considerations

Sea turtle populations facing extreme sex ratio skew will eventually be unable to sustain themselves reproductively. Individual embryos dying from heat stress within nests experience a form of thermal death. Climate change mitigation is a sea turtle welfare intervention.

What You Can Do

Support sea turtle conservation programs adapting to climate change impacts
Reduce carbon footprint to slow global warming affecting sea turtle nesting beaches
Donate to beach shading and monitoring programs at critical nesting sites