Map of findings of Callinectes sapidus in the Black Sea and the Sea of Azov. Grey circle – this study; red circles – data from the used sources: 1–8 (data from the Table 1), 9 (Zaitsev 1998), 10 (Diripasko et al. 2009); 11 (Monin 1984; Pashkov et al. 2012); 12 (Shaverdashvili and Ninua 1975); 13 (Yağlıoğlu et al. 2014; Ak et al. 2015; Öztürk et al. 2020; Aydın et al. 2024; Ceylan 2020, 2024); 14 (Khvorov 2010); 15 (Stefanov 2021); 16 (Bashtannyy et al. 2002); 17 (Snigirev et al. 2020) (for details see Suppl. material 1: table S1).