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Mexico's team competes in the synchronized swimming technical routine preliminary at the Pan American Games in Guadalajara, Mexico, Wednesday, Oct. 19, 2011. (AP Photo/Silvia Izquierdo)

Mexico's team competes in the synchronized swimming technical routine preliminary at the Pan American Games in Guadalajara, Mexico, Wednesday, Oct. 19, 2011. (AP Photo/Silvia Izquierdo)

Synchronized swimming explained

From unflavored gelatin to underwater speakers to "beeping;" synchronized swimming has a specialized set of equipment and competitive framework all its own. -- By John Parker.