An abandoned day-old harbor seal pup died early Wednesday after being rescued from the Children's Pool and taken to SeaWorld San Diego.
Calls about the undersized male pup began coming in during the morning Tuesday, and SeaWorld staffers responded around noon, said SeaWorld's Kelley Terry.
On Wednesday, she said the pup weighed only 7 pounds and appeared to have been born premature. That's about half the weight of a normal day-old pup, said SeaWorld's Dave Koontz.
"Typically, we try to wait a little while on a young pup to see if its mother tries to come back," Terry said.
She said this one appeared to be injured from occasional sea gull attacks, so it was brought back to the park to warm up and be given nutrients.
A necropsy will be performed to determine the cause of death.
— City News Service contributed to this report.