The sea lion, which has been named Frosty, was first reported as stuck under the police rescue boat on Wednesday.
[Ads /]
The experts used a portable ultrasound unit to check the sea lion's vital organ function, and take a series of blood samples to run further testing on to look for any health abnormalities like cancer.
Volunteers from the Center and San Francisco Police Department officers used a mesh net to pull the 200-pound sea lion onto the docks at the Hyde Marina on Friday afternoon.
RELATED: Sea lion named 'Mini' rescued from car dealership parking lot in Corte Madera
The authorities then slowly shuttled the massive mammal into a animal control crate.
[Ads /]
The volunteer rescuers say the sea lion appears to be sick and lethargic.
Frosty was taken to the Marine Mammal Center in Sausalito to receive treatment for his injuries.
RELATED: Mountain lion cubs adopted by Ohio zoo after being orphaned by Redding wildfire
Officials say that if anyone should find a seal or sea lion in distress to call the Marine Mammal Center's response hotline at 415-289-SEAL.