This photograph of a large school of mobula rays by Eduardo Lopez Negrete is one of the entries for the 2014 National Geographic Traveler Photo Contest. Keep in mind that these majestic creatures can reach a 17-foot (5.2 meter) wingspan and weigh over a ton. It may look like a nightmare but they are harmless.
Mobula rays are perhaps best known for their bold attempts at flight*, but these animals can be every bit as stunning below the waves as above them, as this remarkable photograph reveals. They almost look like an alien invasion.