Fig. 4From: First record of the non-indigenous jellyfish Blackfordia virginica (Mayer, 1910) in the Baltic SeaSize-frequency distribution of Blackfordia virginica (Mayer, 1910) from Kiel Canal for the year 2016 and one time point in 2017. Grey bars present 3 mm size bins with overall average indicated by dashed line, all from preserved material, without accounting for shrinkageBack to article page