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Comment by refactor_master | Hacker News Reader

Swimming in the Copenhagen harbor (Denmark) is also possible

https://www.visitcopenhagen.com/copenhagen/activities/baths-...

It might have a slight upper hand in cleanliness with being directly connected to the sea.

Swimming in Sydney Harbour is also possible. They did it for a leg of the triathalon in the olympics a couple of decades back. Wouldn't recommend though, there's a lot of bull sharks in there and they're kinda aggressive. Netted beaches and bays are the go.

Or the North Sydney pool, when it re-opens, with luck next month.

Not open water, but salt, and an absolutely gorgeous location.

Only ~1,000km north, bullsharks have been filmed swimming in groups of ~150 near the Story Bridge in the Brisbane River

To any tourists visiting Aus, please only ever swim where locals swim and only between the flags if on the coast

I live in the eastern docklands of Amsterdam, and there's always lots of swimming here. Amsterdam has invested a lot in cleaning up its canals and other waterways and water quality has improved a lot over the past couple of decades. And there's no sharks.

Clean as long as you don't disturb all the mercury in the top layer of the bed.

I saw that, a bit further along from Kastrup sea bath, with the planes coming in to land at the airport.

I guess it's open water unlike the Seine, but it did surprise me, I felt like I was sat in quite an industrial area when a couple walked past in swimming costumes and towels.

The canals in Copenhagen are pristine compared to cities like Amsterdam. I'd dip in there any time!

People swim in the canal opposite my Amsterdam office every day!

In the 1990s, water quality in Amsterdam was pretty bad, but it's improved enormously since then. I live in the eastern docklands area and people swim a lot in the old harbour.

I go in every morning. Massive quality of life factor, that!

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