The field of play water polo is framed with 2 field lines indicating field areas; where the distance between the respective goal lines shall be 30m for games played by men and 25m for games played by women.
There is always 2m red followed by 3m yellow on each side and 20m green for men alternatively 15m green for women, with a distinct middle field mark in white.
Field lines are affixed in pool wall and made to measure and according to field area. Most often field of play is centred in pool and field lines made from 100mm/4" material complete with take-up reel and tension spring.