Longshore currents move water and sediments to the shore, in the direction of the prevailing local winds. sideways parallel opposite upwards

Longshore current move parallel to the shore as longshore drift under the prevailing wind in zig-zag motion.

It is an ocean current that is cause by swell sweeping into the shoreline at an angle and pushing water down the length of beach in a uniform direction.

It is a geological also process that consist of the transportation of sediments such as silt,clay,sand and shingle.

Hope it helps!