noun - The Junior Division is an age-group category used by the FINA World Junior Open Water Swimming Championships, an international open water swimming competition for elite athletes under the age of 19. The Junior Division is exclusively used for athletes between the ages of 17-18.
FINA World Junior Open Water Swimming Championships
The age groups are determined by the age of the athlete as of 31 December and includes a Youth Division (14-16 years for boys and girls) and a Junior Division (17-18 years for boys and girls).
In the Youth Division, the boys and girls compete over a 5 km course (2 loops). In the Junior Division, the boys and girls compete over a 7.5 km course (3 loops).
The mixed-gender Team Event is a 3 km open water swimming relay comprising of 3 swimmers, either 2 boys and 1 girl or 2 girls and 1 boy. There are two age categories for the 3 km Team Event: 14-16 years in the Youth Division and 17-18 years in the Junior Division. For the Team Event, swimmers can "swim up"; that is, a maximum of 2 swimmers from the 14-16 age category can swim in the 17-18 age group category with 1 team per Federation.