Mobula rays are elasmobranchs belonging to the genus Mobula. There are ten species of Mobula rays, but eight of these are referred to as devil rays and two are referred to as manta rays. These rays are long-lived, slow-growing, and reproduce infrequently (k-selected species), characteristics that make them particularly vulnerable to overexploitation. As filter feeders who follow oceanographic processes and their main prey, krill, Mobula rays are found in tropical and subtropical waters around the world.