Tetrathlon Tetrathlon A tetrathlon (from the numerical prefix "tetra-" meaning four) is a team competition organized by Pony Clubs for its members. It is a variant of the modern pentathlon, without fencing. Thus it comprises the four disciplines of shooting, swimming, riding and running. Ideally, teams consist of four members from one pony club competing against several teams from rival clubs. Competitions are usually held over two days during the summer months. It is recommended that one skill and one endurance phase is completed on each day. For example, shooting and swimming will be on the first day, riding and running
Nature's Great Events to give up. The following year, there was a second and final opportunity. Just in case they were unsuccessful again, the producers devised an alternative sixth episode which would have explored the science behind seasonal changes, looking at how the "Great Events" are triggered and how environmental change may be affecting them. As luck would have it, the sardine run returned for the first time in three years and the team captured the shots they needed. The BBC claimed a number of TV firsts achieved by the production team. Many of the filming techniques first used on "Planet Earth", such