Yes this is a big problem. Everyone remembers the mass recreational swimming conception scare of the 50s.
It seemed all the teen age girls in the small Louisiana town of Gump became pregnant after swimming in the town pool.
This prompted the government to pass the infamous Segregated pool laws of 1961.
In 1965 the law was ammended to include hot tubs, slip and slides and certain sprinklers.
Then of coarse there was the big red scare during the Mcarthy era. It seemed American girls were at risk at coastal beaches. Sperm may very well be crossing the ocean. It was speculated that Russian seamen were deliberatly spilling errrrrr. russian seamen over the sides of subs just to inpregnate American girls.
Even more scary, scientist of the flat earth society speculate that a rash of cross spieces propagation may occur with the abundence of fish and whale sperm in ocean waters.
Women are advised to avoid all ocean front beaches.
Lo there do I see my Father.
Lo there do I see my Mother and my Sisters and my Brothers.
Lo there do I see the line of my people back to the begining.
Lo they do call me.
They bid me take my place among them.
In the halls of Valhalla where the brave may live forever.