Male (on topo, início of the female) and female (laying on the ground)! They are mating! You see the male penguin's cloaca (the small rosa, -de-rosa thing on his bottom)
Visitors get to see an African pinguim up close during a pinguim encounter at Connecticut’s Mystic Aquarium. Note: I did NOT create this video -- I am merely adding it to this spot for your viewing pleasure.