Some nest every year, others nest in alternate years. Egg incubation ranges from 55 to 60 days. Like most sea turtles, it nests at night. This species is primarily carnivorous and feeds on a variety of crabs, jellyfish, shellfish and sponges. Some loggerheads bury themselves in the mud during the winter months.
Dredges excavating ship channels frequently injure or kill the dormant turtles.
Lights on coastal highways and housing developments disorient the nocturnal emerging hatchlings of this species, often causing them to move away from the water and be killed by automobiles. Loggerhead hides are highly valued for their rich color and are widely used to make leather products such as boots, wallets, and purses.