The pup's birth was unexpected, though mom had caught a fair share of attention in the days leading up to it.
"For the last several days, a wild female sea otter had been using the protected basin of our Great Tide Pool to rest from the winter storms. Last night, just as the Aquarium closed, she was spotted once again slinking into the pool for some shut-eye. It's rare for a healthy sea otter to visit the pool so frequently - we started to wonder if she was doing all right," the Monterey Bay Aquarium wrote online.
"Well, mystery solved! Around 8:30 a.m., Aquarium staff witnessed a BRAND NEW pup resting on her belly, being furiously groomed by a proud momma."