Astro the sea lion, who was released into the wild after being bottle-fed for most of his life, tried to return to civilization.
This time, he decided to join an elementary school walk-a-thon!
Astro was swimming in the shallow San Francisco Bay on Friday and apparently noticed children doing laps around a course at the Marin Country Day School in Corte Madera, about 15 miles north of San Francisco. He waddled ashore, completed a lap and starred in the school's photos and videos.