Florida sea turtle hatchlings: every one tested is female

Sea turtles always skew female, but the gap has been getting wider. Hot weather has been linked to more female turtles in Florida for some time. The team's records show nest temperatures climbing, and summer 2026 was especially hot. In a normal year, storms and cloud cover cool things down. This time the nests stayed warm.

Why are sea turtle hatchlings all female?

The warmth of the sand decides it. Hotter nests produce more females. Push the sand too far, though, and the embryos can die inside the egg or develop with physical problems.

Can anything be done?

Wyneken estimates that a population needs about 25 percent of hatchlings to be male every three to four years to stay healthy. The turtles under study fall short of that. Shading the beach to cool nests could raise the share of males, but the approach has limits, according to the university.

The real effect will take a long time to show. Sea turtles need 20 to 30 years to reach breeding age, so we won't know what today's lopsided hatchlings mean for future populations for decades. Males are still being born in other regions. Even so, Wyneken says years with almost no males in the area her team studies are a problem that can't be ignored.