He was kind of a little bit nervous when he was sharing it with me, but he told me that when a penguin finds a mate that they want to spend the rest of their life with, they present them with a pebble -- the perfect pebble.
Il était un peu nerveux quand il m'a dit que quand un pingouin trouve le partenaire de sa vie, il lui offre un caillou, le caillou parfait.