The IEO aquculture research facilities in Mazarrón, Murcia have been recognized as a Singular Scientific and Technological Infrastructure for Atlantic Bluefin Tuna Aquaculture (http://icar.ieo.es/). Its facilities include: installation for control of bluefin tuna reproduction (ICRA), eggs incubation unit, bluefin tuna larval rearing unit and weaning facility, and fully equipped laboratories. Some of the services offered by this infrastructure include the handling and management of bluefin tuna eggs, the massive production of eggs and living prey for feeding bluefin tuna larvae, development of weaning and preongrowing experiments or formation and training of technicians of bluefin tuna rearing.