http://openwaterswimming.eu - Cold, wind, waves, sunburn, currents, jellyfish and flotsam! Hop in and join the fun!
Anyone know if this is still going? I did a quick Google search and got a bunch of hits for past years. Their FB page is either gone or called something other than Three Days in Three Seas.
No it was a one time event.
I believe that Gadi Katz, founder of TI https://www.ti-swim.co.il , organized it