What does family mean to a seabird who soars alone over the open ocean, or to a primate who clings to its mother for years? Whether it's by releasing half a billion eggs like a giant clam or providing a long period of intense care like a koala, parenthood in the animal kingdom is endlessly diverse. In honor of Mother's Day, take some time to appreciate these tender moments between animal parents and their young and learn more about them at the link in bio Photographs by joelsartore. Explore more than 120 photographs of the youngest animals across the animal kingdom in his new book, Photo Ark Babies. #PhotoArk natgeobooks