FILA codified the current form of Beach Wrestling in 2004.Beach wrestling is standing wrestling done by wrestlers, male or female, inside a sand-filled circle measuring 6 meters (20 ft)
in diameter with only two weight categories, heavy and light. The wrestlers wear swimsuits rather than special wrestling uniforms. Wrestlers may also wear spandex or athletic shorts. The objective is to bring the opponent to the ground, push them out of bounds or pin their shoulders to the ground.
Πηγή: http://en.wikipedia.org/wiki/Wrestling#Beach_wrestling