Mareblu is an historical brand in the Italian tuna market. Mareblu was founded in the early 1970s. Since then it has built up a reputation as the "expert fisherman with the sea running through his veins".

Today, thanks to the focus on quality, Mareblu is known as the only tuna brand in Italy which is produced directly where the fish are caught. This fully integrated process results in a product of the highest taste, quality and nutrition.

October 5, 2010, Clearance received from the Office of Fair Trading, United Kingdom, on the acquisition of MW Brands Holdings SAS by Thai Union Frozen Products Public Company Limited.It is expected that the transaction will be completed by the end of October.