This year’s VLIZ Marine Science Day dedicated to the EU Mission Ocean and framed withing the Belgian EU Presidency and the UN Ocean Decade. This edition of the VLIZ Marine Science Day will be a very special one, as VMSD 2024 formally frames the Belgian presidency of the Council of the European Union. This European and international dimension is reflected in the overarching themes of the day: this edition will be firmly rooted in the EU Mission Ocean and the global perspective of the UN Ocean Decade. Renowned personalities such as Mission Ocean co-lead John Bell and esteemed diver-explorer Paul Rose will deliver keynote speeches, setting the stage for a diverse program encompassing interactive sessions, presentations, and poster sessions. Covering a wide spectrum of topics – from marine biology to cutting-edge marine technology and policy – interactive and immersive sessions will offer valuable insights and foster meaningful exchanges. Participants from academia, government agencies, non-profit organizations, industry, and the public sector will have ample opportunities to engage, learn, and contribute to the goals of Mission Ocean and the UN Ocean Decade.