[Avodah] mixed swimming, and allowing walking on the boardwalk

[Michael Makovi]

> but there is little basis for forbidding, for example, mixed swimming, and
> allowing walking on the boardwalk next to the beach....
> R' Meir Shinar

> Which poskim are mattir walking on the boardwalk next to the beach?
>
> AISI it is clearly Assur. See Aruch Hashulchan EH 21: 1, 2 & 3.
>
> SBA

I think R' Shinar was being rhetorical. To prove the point that it
isn't swimming per se, but rather the un-tziut-ness (for which mixed
swimming is paradigmnatic but lav davka), he pointed out that walking
on the boardwalk is as prohibited as the actual swimming.

Mikha'el Makovi