In other observations studying ray abundance and habitat, giant devil rays were observed alone and occasionally in groups with a maximum of 18 rays. The same study also emphasizes that the rays undergo a species migration across the Mediterranean Sea with the seasons, taking advantage of warm, highly productive waters.
While studying ray abundance and habitat, researchers observed giant devil rays both individually and in small groups, with a maximum group size of 18 rays.  The study also noted that these rays undertake seasonal migrations across the Mediterranean Sea, utilizing warm, nutrient-rich waters.