This joyous bunch of Adelie Penguins is celebrating the 10th anniversary of the Antarctic Treaty. These little guys can swim up to 45 mph! They are highly social and curious animals, which sometimes frustrated the early Antarctic explorers. The penguins seemed to taunt the sled dogs, being drawn to their barking and howling, rather than driven off by it. When you wear this adorable penguin t-shirt people will be drawn to you, too.