A wall of water springs into existence at a point you choose within range. You can make the wall up to 300 feet long, 300 feet high, and 50 feet thick. The wall lasts for the duration.
A creature caught in the wall can move by swimming. Because of the wave's force, though, the creature must succeed on a Strength (Athletics) check against your spell save DC to move at all. If it fails the check, it can't move. A creature that moves out of the wall falls to the ground.