Sea turtles have existed for more than 100 million years and have survived ice ages, sea level fluctuations of more than 100 meters and major changes to the continents and the seas. As a result, they may be able to respond to unfavorable nesting temperatures or inundation of beaches as they have in the past, by seeking out new nesting sites or modifying the seasonality of nesting. It may however take decades or centuries for sea turtles to re-establish and stabilize their habitats, and steadily encroaching human development of coastal areas makes the availability of new habitat for them very limited.