Sydney:
The sharks at the Oceanworld Aquarium in Sydney, Australia, received a special visitor bearing gifts on Friday.
A very brave Santa swam among the sharks and other fish at the aquarium to the delight of young observers.
Santa gave the sharks and other sea creatures more than they would normally be fed by the aquarium staff, and they enjoyed their special treat.
Oceanworld staff says the aquarium is one of only three around the world with success in breeding grey nurse sharks in captivity, with two born since 2001.