<P> Underwater video is an scuba - based underwater sport governed by CMAS where teams of competitors using digital underwater video systems all dive at the same saltwater ocean sites at the same time over a two - day period . The submitted digital video are then assessed and ranked by a jury . </P> <P> The majority of the sporting disciplines listed above are governed by CMAS . Other organisations involved in governance of underwater sports include AIDA International and the World Aquachallenge Association which also respectively govern Freediving and Underwater Hockey in competition with CMAS while the Manitoba Underwater Council governs Underwater Football . As of July 2013, it is not known who governs Underwater Ice Hockey . </P> <P> As of 2013, there has been no competition at an Olympic Games by any underwater sport, even as a demonstration, although the following breath - hold events have been conducted as part of the swimming competition - underwater swimming event at the 1900 Summer Olympics in Paris and a plunge for distance event at the 1904 Summer Olympics in St. Louis, Missouri . During the 1950s and the 1960s, various parties including the Amateur Athletic Union of the United States and the International Underwater Spearfishing Association lobbied for the admission of spearfishing to the Olympics . It is reported that in 1968, the International Olympic Committee (IOC) voted in favour of synchronized swimming over spearfishing . In 1999, finswimming was reported as being considered for inclusion in the 2004 Summer Olympics in Athens, Greece . In 2002, Underwater sports was one of the sports considered by the IOC for addition to the programme of the 2008 Summer Olympics in Beijing, China . It and eight other sports were declined admission on the basis of: </P> <P> Statistics reviewed on federation affiliation, nations competing in major events and broadcast and press coverage of major events for most requested sports did not indicate a higher level of global participation and interest than sports currently in the Programme, and therefore could not be considered to bring additional value . </P>

Name an olympic sport played in the pool