These incredibly photogenic animal moms shower their kids with attention, cradling them and grooming them for hours. But all that love is more than a gesture of affection, as newborn sea otter pups can't swim.
The pups are totally dependent for about six months, so mom will carry them around on her stomach like you see here. When the little one does venture into the water on its own, mom will rub the pup to fluff its coat, which causes the fur to retain air bubbles, insulating it from chilly water and causing the youngster to float like a cork.
And that fur is remarkable—it's considered the thickest of any mammal on earth at up to one million hairs per square inch. After about four weeks, sea otter pups will start swimming and eating on their own–at six weeks they'll start diving by themselves, too. Until then, mom keeps them close.