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 search the waters for prey, their horn-like head fins giving rise to ancient mariners' tales of fearsome devilfish dragging boats into the ocean depths.
"An easy book to read and a good one to keep for reference . . . . an invaluable information source."---Steve Weinman, Diver Magazine
