Nuptuna is a species of Tuna native to Termina and appears in the Ocean Fishing Hole in The Legend of Zelda: Majora's Mask 3D. Spoiler warning: Plot or ending details follow. The sight of a Nuptuna is consider good luck for couples about to be married and is said to love special celebrations. As a result, it is attracted to the Couple's Mask due to what the mask represents. Can be caught on the either the First or Final Day. Spoiler warning: Spoilers end here.