This is a video of a zebra shark near Sipadan island.
Translated from Belga news agency in Belgium, 22 December 2007:
The Sea Life Centre in Blankenberge is having an experiment during the Christmas holidays with music to stimulate eroticism between their two tropical zebra sharks. So far, these two have not been very interested in each other.
“It has been already three years ago when we had a baby shark for the last time”, shark keeper Steve Vervaecke says. “So, now two times a day, three Christmas songs will resound through the shark tunnel. They are ‘Last Christmas’, ‘We wish you a Merry Christmas’ and ‘Jingle Bells’. Maybe it is far-fetched; but this might be the perfect stimulus for the sharks.”