Every year from May to July, thousands of mobula rays migrate to Baja California, Mexico. More specifically, these are devil rays. They’re close relatives of manta rays, just much smaller with wingspans of about 1–2m. Not exactly tiny, but compared to the 7m wingspan of mantas, they’re the compact cousins. Despite their name, they’re completely harmless and quite spunky. A group of rays is called a fever, and this one is off the charts with tens of thousands swimming near the surface. Spring currents bring plankton-rich waters to the Sea of Cortez, drawing mobulas in for both feeding and breeding. Parts of the coastline might even serve as nurseries for young rays. Despite these impressive gatherings, many mobula species face threats from overfishing, bycatch, and the gill plate trade. Protecting migratory species is a challenge, but prioritizing aggregation areas and migration routes is a great place to start. Photo by mitty #OceanSchool #Mexico #DosMares #Ocean #Explore