The experimental open-sea sponge culture deployed in proximity to the fish farm cages in Chania (Crete) under SPINAQUA framework is now fully operational and it comprises cultivation structures of at least 50 transplants for the selected 4 sponge species Agelas oroides, Sarcotragus foetidus, Axinella cannabina and Chondrosia reniformis. Each one is specifically constructed based on the species unique growth characteristics, as seen in the video recorded by SPINAQUA diving team (Thanos Dailianis, Julius Glampedakis, Emmanouela Vernadou) during a monitoring visit in the aquaculture site. The video is available at https://www.youtube.com/watch?v=TIQreAZk_KM&ab_channel=sonathd.