World Tuna Day is observed worldwide every May 2 and was instituted as an official United Nations observance in 2016. The day is designed to highlight the importance of sustainably managed tuna stocks and the value of tuna as a significant source of nutrition and economic development for many countries. Tuna, a saltwater fish known for its thickness and high protein content, is regarded as a delicacy in various regions, with the Atlantic bluefin tuna being the largest species, potentially exceeding 2.5 meters in length and 450 kg in weight. The observance aims to address the challenges posed by over-fishing, which has threatened some tuna species with extinction, and to promote aquaculture as a sustainable solution. Activities on this day include disseminating information about the benefits of aquaculture and the dangers of uncontrolled commercial fishing.