These photos capture nearly eight decades of fun at swimming pools around the North West, from the 1930s to the noughties.
Sponsored swims, galas and packed lidos on a hot summer day feature in this pictorial plunge into the past.
The comedian Les Dawson is among those seen taking the plunge, as he opens a pool, while elsewhere, youngsters are seen diving into the water at the open air baths where John Lennon learned to swim as a boy.
The nostalgic images include some of the popular swimming baths and lidos that have sadly been lost over the years.
Perhaps you learned to swim there, spent happy hours splashing around with your friends, or remember braving the diving board.
Do these photos bring back any happy memories for you of time spent in the pool?
If you’re after more North West nostalgia, you might enjoy this look back at the region’s shopping centres in the 70s, 80s and 90s.
1. Diving
High diving fun at Fleetwood Open Air Baths, which was opened in 1925 and replaced in 1974 by the present indoor pool on the same site. A young John Lennon learned to swim at the baths as a regular childhood visitor to his cousin's home in Fleetwood. | Submitted
2. Russian baths
The opening day of Wigan's new Russian baths in 1975 | Submitted
3. 90s swimathon
Swimmers celebrate after completing a sponsored swim at Kingsway Centre, Lancaster, in 1996 | LEP Photo: Darren Andrews
4. Barracudas
Steve Mellor, English international swimmer, with members of the Leyland Barracudas Swimming Club in 1998 | LEP Photo: John Hughes