Tags reveal Chilean devil rays are among ocean's deepest divers

Summary

KAUST researchers and international collaborators tagged 15 Chilean devil rays in the Atlantic, revealing unexpected deep-diving behavior. The tags recorded dives reaching almost 2,000 meters at speeds of 6 meters per second and temperatures below 4 degrees Celsius. The rays exhibited two distinct diving patterns, including long periods at 1,000 meters and stepwise returns to the surface, possibly for thermoregulation. Why it matters: This research challenges previous assumptions about devil ray behavior and highlights KAUST's contribution to marine biology and understanding of ocean ecosystems.