Noun
synchronized skating (uncountable) (US spelling)
A discipline of figure skating where 8–20 skaters skate in a team, doing synchronous movements and precise formations with precise timing.
Other disciplines Synchronized skating Lifts performed by the Haydenettes, 21-time U.S. national champions * Synchronized skating (formerly known as precision skating) is for mixed-gender groups of 12 to 20 skaters. Source: Internet