Complex sentence: The sport was developed between 1980 and 1982 by Igor Ostrovsky, an underwater sports coach at the Moscow Technological Institute, and the first competition was held in Moscow on 8 April 1982.
Split into simpler sentences: The sport was developed during the years 1980 to 1982by Igor Ostrovsky, a coach of underwater sports at the Moscow Technological Institute. The first competition was held in Moscow on 8th April 1982.