The sex of Pesto, a popular penguin at Sea Life Melbourne, was finally unveiled during a gender-reveal party at the aquarium on September 5.Video released by Sea Life Melbourne shows senior keeper Michaela Smale shoveling a pile of snow to reveal blue, for a boy.Pesto’s parents Hudson and Tango attended the celebration alongside the rest of the resident king penguin colony, while humans enjoyed a penguin-themed cake with blue icing inside.“Since hatching earlier this year, Pesto has quickly captured hearts globally, not just for his adorable antics, but for his impressive size. At just nine months old, Pesto tips the scales at a whopping 21kg [46 pounds], thanks to his hearty appetite of 25 fish a day. He