Acknowledgements
Coral Eye Research Center (Bangka Island, Indonesia) and University of Naples ‘Parthenope’ (Ph.D. course) supported and funded this research project. Many thanks to Marco Segree Reinach andClara Serra for their logistic support. Thanks to Niccolò Dondi,Francesca Fratangeli, Anny Forero and Coral Eye diving staff who helped in field activities. Silvia Lavorano (Acquario di Genova) provided useful advice about field operations and data recording.