Report of the Workshop on Age Estimation of Mackerel (scomber scombrus) (WKARMAC2)

A Workshop on Age Reading of Atlantic mackerel (Scomber scombrus) otoliths were recommended by WGBIOP 2015 to be carried out in 2016-2017. Due to the difficulty of finding a chair time passed and the workshop was recommended again by WGBIOP 2017 to be carried out in 2018. This workshop (chaired by Jens Ulleweit, Germany, and Rosario Navarro, Spain), was held in San Sebastian (Spain) on 22–26 October 2018. 12 European countries took part in this workshop (Portugal, Spain, The Netherlands, Germany, Denmark, Norway, UK, Ireland, Faroe Islands, Iceland, Greenland and Greece), with a total of 23 participants from 14 laboratories.