The Expo includes more than 25,800 buyers and suppliers from 150 countries.
The Deputy Minister for Farming and Food, Rebecca Evans, said: “We know in Wales that the quality of Welsh food and drink is up there with the best in the world, and having a presence at events such as the Global Seafood Expo gives us a great platform to promote this.
“Wales has a remarkable range of highly innovative Seafood producers, who are making their mark internationally and whose brands are renowned across the globe for their high quality and for the sustainable way in which they are produced.”
The Welsh Government aim to significantly grow sales and increase market share through adding value, accessing new markets and building on existing markets in the food and drink sector, and are attending the event as part of this long-term ambition.
Ms Evans also announced that a Welsh company attending the event, Anglesey Aquaculture, were recently awarded the highest level for sustainably produced fish by the Marine Conservation Society.
The company has won a contract with Waitrose to be the sole supplier of whole and filleted fresh Sea bass on Fishmongers counters in Waitrose supermarkets across the UK. The contract is worth around £35,000 a week and will be in addition to the Anglesey Aquacultures current sales within the UK and USA.
Ms Evans added: “Sustainability is important to Wales and sets the context for how we manage our seas and fish stocks."