Raffaella Casotti¹, Vincenzo Donnarumma¹, Fabio D'Agostino², Roberta Piredda³, Erik Zettler⁴, Carola Murano⁵, Anna Palumbo⁵, Augusto Passarelli³, Linda Amaral Zettler⁶ and Alvaro Adame Rodriguez³, (1)Stazione Zoologica Anton Dohrn, EMI Department, Naples, Italy, (2)CNR, ISMAR Capo Granitola and Mazara del Vallo, Italy, Italy, (3)STAZIONE ZOOLOGICA A. DOHRN, Napoli, Italy, (4)NIOZ, Royal Netherlands Institute for Sea Research and Utrecht University, Den Burg, Netherlands, (5)Stazione Zoologica Anton Dohrn, BEOM Department, Naples, Italy, (6)NIOZ, Royal Institute for Sea Research and University of Amsterdam, Texel and Amsterdam, Netherlands