At night, when many diurnal fishes descend from the water column and become inactive a short distance above the bottom, the Pacific electric ray switches to an active hunting strategy. It stalks fish by slowly swimming or simply drifting through the water; when it closes to of the prey, it lunges forward and again envelops the prey within its disc while delivering shocks. To better secure the fish within its disc, the ray will make short kicks with its tail that sometimes send it into barrel rolls or somersaults. Finally, the stunned prey is maneuvered to the mouth with ripples of the disc. In one recorded case, a long female captured and consumed a long jack mackerel ("Trachurus symmetricus") in under ten seconds. Nighttime seine net sampling at the surface of Monterey Bay has captured Pacific electric rays in surprising numbers, suggesting that they rise upward from the bottom to feed on small fishes.