The video below is courtesy of the CN Sant Andreu Youtube page.
The video shows a compilation of action from previous Mare Nostrum competitions, showing off many of the big name athletes that have competed there in the past. Some of the athletes featured in the video include Chad Le Clos, Katinka Hosszu, Adam Peaty, and Ryan Lochte.
The dates and locations are shown throughout the video, with three coming up in 2016. The series begins in Monaco on June 4th and 5th, moves to Canet en Roussillon June 8th and 9th, and finishes off in Barcelona on June 10th and 11th.
The dates for the competitions in 2017 are also included, also with three. Beginning in Monaco again on June 10th and 11th, the series will head to Barcelona next on the 13th and 14th before finishing in Canet et Roussillon on the 17th and 18th of June.
If you want to look into volunteering at the series click here.