First Swimming challenge organized by WWF Bulgaria on 14 May 2016 with the occasion of WFMD.
26 persons took part in the challenge,swimming more than 21 km in total per 30 minutes. The main objective was people being in the water to think at least 30 minutes about the problems migratory fish have. The participants donate more than 600 euro that will be used for conservation activities on Danube river.
