The term 'Devil Ray' is a collective name for two species of rays, the MANTA (5 letters) and the Mobula (6 letters). The MANTA is the largest species of ray, with a wingspan of up to 7 meters. It is found in tropical and subtropical waters around the world. The Mobula, also known as the Beal (4 letters), is a smaller species of ray, with a wingspan of up to 2 meters. It is found in the Atlantic, Pacific, and Indian Oceans. Both species are filter feeders, meaning they feed on plankton and small fish. They are also both threatened by overfishing and habitat destruction.