The 13th International Symposium on Spermatology

It was with great pride and joy we welcomed a wide range of scientists to the 13th International Symposium in Spermatology at the conference venue Skogshem and Wijk on the suburban island of Lidingo, just outside central Stockholm. The symposium took place on 9–13 May 2018, and focussed on any aspect involving the Spermatozoon (Fig. 1). Of special interest was the variability in solutions for basically the same task: to transfer half the genetic material of a new individual and to deliver this genetic material to a gamete of another individual. Looking at both animals and plants, there is a huge variability in challenges to accomplish the mission. Therefore, there was also a wide range of species represented.