Every summer, some species of sea turtles migrate north along the east coast of North America to feed. When the weather starts to turn cool again, these turtles turn around and head south. Along the way, turtles sometimes get stuck at Cape Cod, an area of coastal land in Massachusetts that extends in the shape of a hook. If the water becomes too cold, these turtles can turn hypothermic and stay stuck there. In previous years, only 5-10 turtles would wash up on the shores. But in recent years there have been more than a thousand.