Wildlife

Wild Turtle Nest Temperature and Sex Ratio

Climate warming is skewing sea turtle sex ratios toward females as nest temperatures rise, threatening population viability.

Key Facts

Sea turtle sex is determined by nest incubation temperature
Temperatures above 29C produce female-biased clutches
Some Florida beaches now produce over 99% female hatchlings
Male-biased cooler northern beaches are critical for population balance

Welfare Considerations

While temperature-based sex determination does not cause individual welfare harm directly, skewed sex ratios toward near-total female production reduces mating opportunities and threatens population viability. Population collapse represents the ultimate welfare failure for remaining individuals.

What You Can Do

Support climate policy to reduce greenhouse gas emissions
Donate to sea turtle nest monitoring and shading programs
Participate in beach surveys that track nest temperatures and hatchling sex ratios
Support protection of cooler northern nesting beaches as refugia