Police and maritime experts have done a hard job cleaning the highway as they tried to bring a 500lb elephant seal back into the water, but it has been coming back.
When the SEALs were seen trying to climb the wall near Sonoma Sears Point on Highway 37 in Northern California, the police were called to find the animal growling in traffic.
The California Highway Patrol arrived with American Fish and Wildlife Service personnel who managed to bring the giant animal back into the water.
But instead of traveling to San Francisco Bay, it went on its way back and came back at least twice.
Andrew Barclay, spokesman for the California Highway Patrol, said that every time we let her into the water, she would go back around and try to climb out again.
The video on YouTube shows the moment they finally put the seals back in the water, and most of them left the scene when the tide dropped on Monday night, making it harder for her to reach land, but Barclays said, some health protection center personnel will patrol the area overnight in case mammals try to return to land again.
Crew of the sosharito
The Marine Mammal Center, headquartered in the San Pablo Bay National Marine Reserve, has also helped with the rescue.
Marine Mammal Center spokesman Laura Schell said the seal did not appear to be injured and she may get lost and confused after swimming on the wrong waterway.