Ioulia Santi^1,2, Christina Pavloudi³, Raffaella Casotti⁴, Hanneloor Heynderickx⁵, Cymon Cox⁶, Katrina Exter⁷, Pierre E Galand⁸, Laurence Garczarek⁹, Cecile Fauvelot¹⁰, Pascal Hablützel¹¹, Daniel Kumazawa Morais¹², Fabrice Not¹³, Regina Kolzenburg¹⁴, Melina Loulakaki¹⁵, Bruno Louro¹⁶, Daniel Lundin¹⁷, Catarina Magalhaes¹⁸, Stelios Ninidakis¹⁵, Teresa Nogueira¹⁹, David Palecek¹⁶, Janore Pinhassi¹⁷, Roberta Piredda²⁰, Kim Praebel¹², Mads Reinholdt Jensen¹², Ander Urrutia²¹, Renaud Vuillemin²² and Nicolas Pade²³, (1)European Marine Biological Resource Centre (EMBRC), Paris, France, (2)Hellenic Center for Marine Research, Institute of Marine Biology Biotechnology and Aquaculture, Heraklion, Greece, (3)European Marine Biological Resource Centre, Paris, France, (4)Zoological Station Anton Dohrn of Naples, Integrative Marine Ecology, Naples, Italy, (5)Flanders Marine Institute, Osteende, Belgium, (6)Centro de Ciencias do Mar (CCMAR), Faro, Portugal, (7)Vlaams Instituut voor de Zee vzw (VLIZ), Oostende, Belgium, (8)CNRS, Observatoire océanologique de Banyuls-sur-Mer, LECOB, Banyuls-sur-Mer, France, (9)CNRS-Sorbonne Université, Station Biologique de Roscoff, Adaptation et Diversité en Milieu Marin, UMR 7144 AD2M, Roscoff, France, (10)Sorbonne University, Institut de la Mer de Villefranche, Villefrance, France, (11)Flanders Marine Institute (VLIZ), Ostend, Belgium, (12)University of Tromso, Tromso, Norway, (13)Sorbonne University, Station Biologique de Roscoff, Roscoff, France, (14)Umeå Marine Sciences Centre, Umea, Sweden, (15)Hellenic Center for Marine Research, Heraklion, Greece, (16)Centro de Ciências do Mar, Algarve, Portugal, (17)Linnaeus University, Kalmar, Sweden, (18)Interdisciplinary Centre of Marine and Environmental Research, Matosinhos, Portugal, (19)Instituto Nacional de Investigação Agrária e Veterinária, Oeiras, Portugal, (20)Stazione Zoologica Anton Dohrn, Naples, Italy, (21)Plentzia Marine Station, Plentzia, Spain, (22)Sorbonne University, Observatoire Océanologique de Banyuls sur Mer, Banyuls sur Mer, France, (23)European Marine Biological Resource Centre (EMBRC-ERIC), Central Office, Paris, France