candidate: Events run by USA Diving each year in the United States are the FINA / USA Diving Grand Prix , the U.S. National Diving Championships ( formerly known as the U.S. Open Diving Championships ) , the Speedo National Junior Diving Championships and the USA Diving National Grassroots Invitational.USA Diving provides oversight to 42 Local Diving Associations ( LDAs ) encompassing more than 300 diving clubs nationwide that provide competitive and training programs collectively referred to as Junior Olympic or JO Diving for divers through High School ( age 18 and under ) .