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we went out with a small ship to have a bbq on the water . the russians did some fishing and got a lot of nice fish . then some of them went swimming - well , they jumped into the water , stayed there for a moment and then went out again . we wanted to do the same , and so Anica , Maude , Elias and i also took a bath in the very cold sea .
Why did the speaker and their friends choose to try swimming in the freezing water ?