Out of sight near the heart. When the penguin chooses its mate, it is for life. But to make it last, penguin pairs have a secret: don't see each other too much. According to a study conducted by British scientists in the Falkland Islands (South America), pairs of penguins only see each other three months a year. Each year, seabirds prove their loyalty by getting together for the breeding season. Photo credit: Derek Oyen