We are grateful to Niccolo Roccatagliata (Menkab), Alessandro Verga (Golfo Paradiso Whale Watching), Michele Cassinelli (Motonave Creuza da ma), Antoine Drochon and Patrice Garziglia (whalewatching.fr) and Federico Magione for reporting sightings; Salvatore Romano and Giuseppe Paolillo (WWF), Barbara Mussi (Oceano Mare Delphis), Nicola Maio (University of Naples), Clara Monaco (Marecamp), Oliver Boisseau, Conor Ryan and Anna Moscrop (MCR), Stefania Giglio (Associazione Mare Calabria), Guillherme Estrella (Ocean emotion) and Rui Peres dos Santos (Futurismo Azores Whale Watching) for their personal communications and for sharing insights concerning their respective data sets; Tobia Tudino for proofreading; Oliver Boisseau and an anonymous reviewer for revisions and improvement of the manuscript. We are also grateful to Genoa University and SLAM to fund our research activities, and Bergeggi Marine Protected Area to support Menkab projects.