Rays are among the largest fishes and evolved from shark-like ancestors nearly 200 million years ago. They share with sharks many life history traits: all speci

Manta and devil rays are some of the most intriguing creatures in the ocean. Driven forward by powerful beats of wing-like pectoral fins, these filter feeders s

Examines the natural history and evolution of various species of sharks and rays, members of the same subclass, describing their physical characteristics, feedi