Sea turtles are being followed by marine biologists to learn how to protect the threatened and endangered species. The sea turtles are tagged with a satellite transmitter and other tracking devices.
So far, only the Gulf Coast National Seashore has seen oil on its barrier islands. But park officials from Louisiana for Florida's space coast are bracing for more oil.
As studies predict that vital coral reefs are headed for extinction worldwide, experts say hunger, poverty, and political instability could ensue.
Shifting climates and needed upkeep are issues facing America’s treasured spots.