The Institute of Marine Sciences (CSIC) is studying the marine environment and its living organisms, researching the functioning of its ecosystems and the possibility to ensure its protection and recovery. But the ocean is huge, too large to get to know it relying only on the Institute's own work. In order therefore to give voice to other 'researchers', observers, naturalists, marine professionals and lovers of the ocean, the Institute has created the portal 'Observer of the sea'. Thus, the Institute seeks to achieve a more appropriate, current and realistic vision of the oceans.