Stefano Ciavatta¹, Susan Kay², Robert J W Brewin^2,3, Rachel Cox⁴, Annalisa Di Cicco⁵, Francesco Nencioli², Luca Polimene⁶, Michela Sammartino⁷, Rosalia Santoleri⁸, Jozef Skakala² and Manolis Tsapakis⁹, (1)Plymouth Marine Laboratory / National Centre for Earth Observation, Plymouth, United Kingdom, (2)Plymouth Marine Laboratory, Plymouth, United Kingdom, (3)College of Life and Environmental Sciences, University of Exeter, Penryn, United Kingdom, (4)AquaBioTech Group, Mosta, Malta, (5)CNR-ISMAR, Rome, Italy, (6)Plymouth Marine Laboratory, MEMP, Plymouth, United Kingdom, (7)CNR Institute of Atmospheric Sciences and Climate, Rome, Italy, (8)CNR – Istituto di Scienze Marine, Rome, Italy, (9)HCMR – Institute of Oceanography, Greece