From Tekkenpedia

Beach
Walls	Yes
BG Music	Kitsch

Beach is a stage in Tekken 4. As the stage's name suggests, this fight takes place at a beach. There is an ocean. The ocean can be walked into a little bit, but red balls and a rope separate the part of the ocean that can be walked into and the part that can't be walked into. The rope and the red balls count as a wall. Many palm trees and some billboards are in this stage. Also, a concrete wall that has some graffiti on it and a metal fence surround the fighters. There is a shack in this stage, as well. Some other people are here, too.