Rio Mare’s delicious tuna in Italian olive oil! Rio Mare tuna is made using only the finest ingredients and the highest-quality production methods. Rio Mare’s 12x120g MSC-certified tuna in olive oil is pre-drained, containing just the right amount of olive oil for a tender and flavorful result. In addition, the product carries the MSC certification, meeting even the strictest sustainability standards. Rio Mare – Tonno Fantastico!