Is swimming in underwear acceptable instead of costume in swimming

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Why do some swimming pools (eg in France) insist on everyone wearing tight Lycra swimming suits? - Quora

Can teenage boys swim in underwear at the beach? - Quora

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What are the pros and cons of swimming in underwear? - Quora

What should I wear to a pool party if not swimming? - Quora

Is it bad to wear too tight shorts when swimming in a public pool? - Quora

Swimwear guidance for the pool Feel comfortable in your swimwear

Swimwear Policy - Fallsview Indoor Waterpark

My eleven year old son went to the swimming pool and forgot his togs. If he is comfortable is it okay for him to swim in his underwear? - Quora

Are people allowed to swim with clothes on in an Australian swimming pool? - Quora

Do men need to wear underwear when swimming? - Quora

What happened when I wore my underwear to the beach

Best period swimwear: Bikini briefs and swimsuits tried and tested