The biggest shark in a South Korean aquarium has killed another in an apparent "turf war". 

The 7.2ft female sand shark slowly devoured the smaller male banded houndshark "bite by bite", according to witnesses. 

Visitors to aquarium in Seoul the next day were amazed to see the eight-year-old shark swimming around the tank with the tail of her former rival dangling out of her mouth. 

Experts told Sky News that the tail was likely to remain in the shark’s mouth for a few more days before she is forced to regurgitate the body because she cannot digest it. 

Oh Tae-Youp, who works at the aquarium, said: "Sharks have their own territory.

"However, sometimes when they bump against each other, they bite out of astonishment.

"I think the shark swallowed the whole body, because they usually eat it all when they bite the head part."

Although sharks have been known to be aggressive with each other at the aquarium one eating another is rare - and this is the first time it has happened in front of visitors.