I enjoy to swim,   the self-propulsion of self through fresh or salt water.
I love swimming in the pool!
I prefer to swim at sea. Something I find amazing is tha human can hold their breath underwater and swim in a rudimentary way within weeks of birth.
I know! do you know how to swim?
Yes, and I believe everybody should know for safety reasons, in fact, in some contries, swimming lesson are a compulsory part of education.
really?? what are those countries? do you know?
I don't remember, but it make sense.  In the other hand swimming is one of the top recreational activities and formalized sports.