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.
37. Schools gala
Children at the Preston Schools Swimming Gala in March 1984 | Other
38. 50s bathing
A busy day at Lytham's paddling pool and sand pit, sometimes known as Lytham Lido, in the 1950s. It was a children's paradise, especially as the state of the beach steadily declined. | Submitted
39. Back to the 80s
Derby Baths, Blackpool, in 1980 | Submitted