someone tell me how beach wrestling works?

I should have added that specially selected "sponge girls" will be on hand at the NC Beach Championships to sponge the sand out of competitors eyes as needed...Should be a hot one on the beach this weekend

Rules are posted at http://www.ncwrestling.org/BeachChampionships.html and in the rule book on themat.com
Here are the nuts and bolts
Rules for Beach Wrestling

Competition Dress:
1. Trunks for men without any accessory.
2. Swimsuit in one piece or two pieces for women without other accessory.
Competition Surface:
1. On sand, inside a circle 6 meter (~ 20ft) in diameter.
Duration Of The Matches:
1. One period of maximum three (3) minutes.
Officiating:
1. The person in charge acts as referee and his decisions cannot be
questioned.
Kind Of Victories:
1. By fall when a wrestler touches both shoulders on the ground.
2. By throw when a wrestler has succeeded in having his opponent touch
twice during the match a part of his body on the ground. In the action
the attacking wrestler can put one or both knees on the ground.
3. By leaving the competition area if a wrestler has succeeded in pushing
twice one foot of his opponent out of the competition area.
4. By adding to a throw a leaving of the competition area.
5. By decision of the person in charge when at the end of (3) minutes no
action was executed by one wrestler compared with the activity of the
other wrestler.
Prohibitions:
1. Kick or punch.
2. Attack the face or the hair.
3. Cover the body with an oily and / or slippery substance.
4. Holds that can lead to dislocation.
5. Stopping the match for any reason is forbidden.