The drone was flying at 400 feet above the ground when we spotted a large group of Mobula Rays, approximately half a mile from the shore. Maybe 200 individuals, split in 2 groups. These rays, sometimes referred as "flying rays" or "devil rays", are known for their unique spectacular breaching behavior.
After the flight, the SD Card revealed that the rays were not alone: a dozen of large sharks were playing between the two groups. Air snorkeling is a good thing after all.