Elephant seals

(Image credit: The Marine Mammal Center)The Marine Mammal Center in Sausalito, Calif., runs a clinic that rescues sick, injured and orphaned seals, sea lions and other marine mammals.

Hawaiian monk seal hospital

(Image credit: The Marine Mammal Center)The Marine Mammal Center is building a hospital for Hawaiian monk seals in Kailua-Kona, Hawaii.

Hawaiian monk seal

(Image credit: Bonnie L. Campbell | USFWS)Hawaiian monk seals are the most endangered species in the pinniped group (containing seals, sea lions and walruses).

Elephant seal release

(Image credit: The Marine Mammal Center)Workers at The Marine Mammal Center release elephant seals after treatment.

Harbor seal feeding

(Image credit: The Marine Mammal Center)Workers administer food to a baby harbor seal.

Observation deck

(Image credit: The Marine Mammal Center)Visitors can view the seals from The Marine Mammal Center's observation deck.

Sea lion rescue

(Image credit: The Marine Mammal Center)Marine Mammal Center workers rescue a sea lion.

Sea lions

(Image credit: The Marine Mammal Center)Sea lions go for a dip in a pool at The Marine Mammal Center.

The Marine Mammal Center

(Image credit: The Marine Mammal Center)"Patients" lounging in the sun at The Marine Mammal Center.