On Monday, April 14th Green Action organized a public discussion in Dubrovnik entitled ' Ombla - Croatian pearl of the world ' .
The debate was attended by karst hydrologist Prof. Ph. D. Ognjen Bonacci , entomologist and caver M.Sc . Roman Ozimec and karstologist Ph.D . Ivo Lucic . The panel was moderated by M.Sc . Jagoda Munic from Green Action .