Turtles in general have a long life span. But it's difficult to know exactly how long sea turtles can live. Their life span is often longer than most research projects. So it is hard to accurately measure their life span over this long period of time. The most consistent estimate is about 80 years.
All species of sea turtles, except for the flatback sea turtle in Australia, are listed as endangered or critically endangered. Sea turtles have many natural predators. Tiger sharks and killer whales eat adult sea turtles. Dogs, seabirds, and raccoons eat sea turtle eggs and hatchlings.
Sea turtles also face many threats from human activity. Beach development, like the building of new hotels and homes, reduces suitable places where sea turtles can nest. Disturbances, such as noise, trash, and light, can also scare sea turtles away from their nesting sites. And in some cases, sea turtles can die from eating trash that they have mistaken for food.
Perhaps the most severe problem to the survival of sea turtles is the risk of drowning in large commercial nets that are used to catch shrimp. Sea turtles cannot live under water for a long time without surfacing to breathe. So getting entangled in the nets prevents them from breathing.
Other threats to sea turtles include illegal hunting for meat and shells, illegal egg collecting, and collisions with boats and propellers.
There are a few simple things you can do to protect sea turtles: