The 15th Annual World Congress of Ocean-2027 (WCO-2027) will be held during October 20-22, 2027 in Lisbon, Portugal. WCO series congress contributes to offering professionals in the field of ocean a multidisciplinary informative cooperative platform, and it has been one of the most influential and grand ocean events in the world. The conference offers the business leaders, academic researchers and government agents around the world to meet and exchange ideas in research technologies and application experiences face to face, finding gaps in the technology development and build future collaboration. The three-day conference is an effective series of activities including Plenary Forum, Parallel Sessions, Welcome Banquet, Exhibitions, Posters and Tours etc.