Bathing here, so it looks to me, must be a high risk. The sea-water looks mudy and dirty, in fact, you cannot see the usual green or blue colour as elswhere on the sea-shore. What surprised me the most, I couldn't see the bottom even in the shallow.
Equipment: Since the bathing isn't recommendable, I suggest you other activities like boating, surfing or paragliding.
I read that Lignano Sabiaddoro is a beach that attracts using an extra argument - sports. With large and good sportive facilities, several sportive events of all kinds take place in town, giving life to it. As a matter of fact, I would never go to Lignano Sabbiadoro, if it wasn't... sports.
European Masters Games was an event that gathered more than 4000 competitors in 20 sports. It was not hard to identify them in the beach, but everybody took seriously the sportive objectives, and no matter the age and condition,we all gave our best in competition and fraternization.