Mobula rays are sometimes called flying rays, thanks to their acrobatic leaping. But scientists are not sure exactly why they do it. The rays have large, flat, diamond-shaped bodies and long fins, ...

Although scientists don't know why these gigantic fish jump, they've at least measured how high: some of the most spectacular jumps can reach over 6.5 feet above the surface. And it's not just ...

Forming the largest aggregations of rays in the world, still very little is known about this species. They gather in the thousands in huge shoals, and undergo one of the greatest spectacles of nature.