In the remote, turquoise reaches of the Chagos Archipelago, a spectacular phenomenon has been captured by long-term marine monitoring: the formation of massive, synchronized feeding spirals by the Reef Manta Ray (Mobula alfredi). These giants, which can reach wingspans of over three meters, have been observed engaging in a complex, circular ballet that defies traditional solitary foraging models. For decades, scientists viewed these rays as opportunistic filter feeders, drifting largely at the mercy of currents. However, new data suggests a sophisticated level of collective intelligence. By forming tight, rotating chains, the rays create localized hydrodynamic vortices that concentrate planktonic biomass, turning the open ocean into a highly efficient feeding funnel. Hydrodynamic Engineering and Energy Efficiency The mechanics behind these feeding spirals are nothing short of biological engineering. As the rays line up head-to-tail, they utilize...