Warmer oceans and depleting food have affected the ubiquitous loggerhead turtle’s reproductive and migratory patterns — and even its size.

Female sea turtles lay their eggs, cover the nest with sand and then return to the ocean, leaving them to develop and hatch on their own. Female sea turtles lay their eggs, cover the nest with sand ...

A 17-year study shows that warmer oceans and falling food supply are causing sea turtles to nest earlier but lay fewer eggs.