Böttcher, Michael Ernst; Ehlert von Ahn, Cátia Milene; Dellwig, Olaf; Struck, Ulrich; Gehre, Matthias; Escher, Peter; Vogler, Susann; Szymczycha, Beata; Kotwicki, Lech (2026): Geochemistry of shoreline sites impacted by submarine groundwater discharge in Hel, Puck Bay, Poland, southern Baltic Sea 2009 and 2010 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.992434