A baby seal was rescued Sunday after wandering into a parking structure in Redwood City. It is still unclear why he came ashore.

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A good Samaritan called Redwood City Fire Department to rescue Santos, a 5-month-old Northern fur seal.

"5 month old Santos made it back to the fire station where he posed for pictures and took a nap," Redwood City Fire wrote on social media.

Santos was transferred to the Marine Mammal Center in Sausalito where he is being monitored and treated before he is eventually released, fire officials said.

He had a full exam Monday, where veterinarians determined Santos was a male and in good health. He has decent body condition and is alert but not overly active, animal rescuers said on social media.

“Further diagnostic testing is underway and will hopefully tell us why this pup veered off course and came ashore,” the center wrote.