Marine & Aquatic

Sea Turtle Nest Incubation Climate Change Impacts

Rising beach temperatures from climate change are altering sea turtle nest incubation, with significant welfare and conservation implications.

Key Facts

Sea turtle sex is determined by incubation temperature - warmer temperatures produce more females
Beaches in Florida and the Caribbean have reached 90%+ female skew in recent studies
Nest temperatures above 35C cause embryo death and reduced hatchling viability
Green turtles at Caribbean sites are now producing almost entirely female hatchlings
Shade structures, irrigation and beach vegetation restoration can moderate nest temperatures

Welfare Considerations

Embryo death during incubation represents a welfare concern at the individual level, but the population-level skew towards female-only production threatens long-term viability. Hatchlings from extremely warm nests show reduced fitness. Conservation welfare must address both individual hatchling welfare and population viability.

What You Can Do

Support beach temperature monitoring programmes for sea turtle nesting sites
Donate to conservation organisations implementing shade and irrigation for turtle nests
Advocate for coastal development restrictions that protect nesting beach vegetation
Reduce your carbon footprint to address the root cause of beach temperature increases