“…In contrast to zooplankton, benthic animals in the Baltic-Skagerrak System generally respond either negatively or neutrally to OA (to date there is one report of a positive response; seastar, Skagerrak, Dupont et al 2010 ). Negative responses include reduced embryonic and larval survival (brittle stars, Skagerrak, Dupont et al 2008 ; bivalves, Baltic, Jansson et al 2016 ; Skagerrak, Ventura et al 2016 ; van Colen et al 2018 ), delayed larval development (sea urchins, Skagerrak, Stumpp et al 2011a ), and immune suppression (crustaceans, Skagerrak, Wood et al 2014 ; Hernroth et al 2015 ; see Table 1 for full list). Reports of no, or minor, responses to OA include effects on fertilisation success (bivalves, Skagerrak, Havenhand and Schlegel 2009 ), adult growth (bivalves, Baltic, Thomsen and Melzner 2010 ), larval development (crustaceans, Skagerrak, Baltic, Pansch et al 2012 , 2013 ), and metabolic scaling (echinoderms, Skagerrak, Carey et al 2014 ; see Table 1 for full list).…”