CMAS directly oversees the following four competitions at international level: the World Championship, Continental Championships, the World Cup and the CMAS Junior Trophy. World Championship The World Championship is held every two years in odd-numbered years for senior swimmers starting with the year 2007 and in even-numbered years for junior swimmers starting with the year 2008. Pool competition held over five days while open water competition is held over a maximum of three days. World Cup This is an annual event which was first held in 2006 and consists of a minimum of three rounds including a final all known as meetings which are attended by swimmers from clubs affiliated to a CMAS national federation. Races are held in both swimming pool and open water sites for individuals and clubs in the age groupings of senior and junior for both male and female. CMAS Junior Trophy This is an annual swimming pool-based event for junior national teams for both male and female swimmers. Continental championships Continental championships which are conducted in an identical manner to the world championships require a minimum of five countries from a continental body such as Africa, America, Asia, Europe and Oceania as defined by the International Olympic Committee (IOC). The Continental championships are held every two years in odd-numbered years for senior swimmers starting with the year 2008 and in even-numbered years for junior swimmers starting with the year 2007. The European Championships have run since 1967 and have been held 21 times. Asian Finswimming Championships is reported to have been held 13 times with the first being held in 1989 and the most being held during 2012 in Da Nang, Vietnam. Other CMAS-aligned events There have been three Pan-American Championships, starting in 1993, with the last being held in 2001 in Cali, Colombia. There have also been five "Arab Zone" Championships, the last was held in 2003 (in Beirut, Lebanon). World Games Finswimming has featured at the World Games as a trend sport since the inaugural games held during 1981. Participation is reserved for the best swimmers from the CMAS World Ranking and the best relay teams as selected by the CMAS Finswimming Commission. Other multi-sport events Finswimming has appeared at multi-sport events such as the following: Asian Indoor Games, Bolivarian Games, Southeast Asian Games, World Corporate Games from 1998 to 1992, and the World Scholar-Athlete Games. The sport was also demonstrated at the