The Ghost Girl is proven to exist in Ocean Beach, it is based on the female pedestrian models around the beach. When the player rides the motorcycle with the female pedestrian into the shallow water, the pedestrian dies and vanishes. Players have further demonstrated that when the player rides back to the shore, blood splatters under the bike, and the pedestrian model reappears on the bike, the model repeatedly dissipates and returns to life. Another glitch is that on rare occasions, the pedestrian with the player can't be shot and keeps vanishing.
Technically, it is an uncommon glitch. A rational explanation would be that the game developers didn't produce a code for driving with the pedestrians into the shallow waters. This could be the reason that the pedestrian model causes multiple errors.
This glitch has reportedly been removed out of the iOS and Android ports.