41 Education and training relating to nature conservation and the environment; provision of educational services relating to ecological topics; ecologically orientated aquatic instruction; arranging and conducting of conventions; organisation of conferences, exhibitions and competitions; educational services relating to the conservation of nature; coaching in economic and management matters; recreational services, namely, sea-life centres; organisation of medical symposia relating to marine sciences; education, entertainment and sport services; organization, arranging and conducting of boat races; publication of instructional literature; publishing services for books and magazines; providing on-line publications; publication of text books; arranging, conducting and organisation of workshops; organising of sporting activities and of sporting competitions; instruction courses relating to sporting activities