The temperature of the nest determines the sex of the young turtle. At 30 ° C, the ratio of male to female turtles is equal. At higher temperatures, women are favored. At lower temperatures, men are favored. After about 80 days, the young turtles usually dig themselves out of the nest at night and head to the brighter waves. Once inside the water, the log turtle uses the magnetite and the Earth’s magnetic field to navigate through the brain. The IUCN Red List classifies red sea turtles as “vulnerable”. The population size is decreasing. The prospects for this species are not good due to high mortality and slow reproductive rates. Humans directly or indirectly threaten sea turtles and other sea turtles. Although worldwide legislation protects sea turtles, their meat and eggs are consumed without law enforcement. Many sea turtles die from bycatch or submerged in fishing lines and fishing nets. Plastics pose a major threat to log fish because floating bags and sheets are similar to jellyfish, a popular prey. Plastic can cause intestinal blockage, plus it can release harmful compounds, destroy tissue, thin eggshells or alter the behavior of the turtle. Habitat destruction caused by human encroachment deprives the nesting turtles. Artificial lighting can plague young turtles and interfere with their ability to find water. People who find young turtles may try to help them get into the water, but this interference actually reduces their chances of survival because it prevents them from building the power they need to swim. Climate change is another cause for concern. Since temperature determines hatchability, an increase in temperature may bias the sex ratio toward women. In this regard, human development may contribute to sea turtles, because the nests covered by tall buildings are cooler and produce more males.