This is the mesmerising moment sharks appeared to perform a stunning dance - with one biting onto the other's fin.

Two leopard sharks were spotted swirling around in their enclosure at Starlight 68 Plaza in Chongqing, China, on January 12.

Footage shows one of the sea creatures gently biting onto the pectoral fin of its companion while they swims upward in a circular motion. They were rotating like they were dancing for the assembled visitors.

Moments later, they briefly became stuck between a log and coral-like decorations before continuing to glide gracefully downward.

Leopard sharks are known to be generally docile and shy, but they can be curious and easy to train.

Male sharks may bite the fins of female sharks to get into position for mating. These bites can sometimes be severe.