The beluga whale that blows bubbles and juggles

Like children blowing little bubbles through rings, these beluga whales are astounding onlookers by learning to blow bubbles of air underwater.

The whales have delighted thousands of visitors since being taught the impressive trick by scuba divers in a pool.

They are given a breath from the diver's regulator to give them enough air to blow the big bubbles.

Following a clap from their instructor they exhale the air, about 30cm (12in) wide, towards a glass wall. They also sometimes direct the bubble right at members of the audience standing by the glass.

The three belugas form a group as the diver blows air out of his regulator for them to draw into their lungs.