1. Department of Life and Environmental Sciences (Di.S.V.A.), Polytechnic University of Marche, UO CoNISMa, Ancona, Italy
2. Cattolica Aquarium, Cattolica (RN), Italy
3. TREES - Tourism Research in Economics, Environs and Society, North-West University, Potchefstroom, South Africa
4. Hopkins Marine Station, Stanford University, Pacific Grove, CA, USA
5. Department of Fish and Wildlife Conservation, Virginia Tech, Blacksburg, VA, USA