There's been a few videos and photos uploaded to social media this afternoon of what looks very like a shark swimming around in the Grand Canal by the Portobello lock.
Take a look.
Hmm… Should we be worried about that swan?
Here's a different angle.
While it is convincing, don’t worry, it's still safe to go in the water (although we don't recommend going into the canal) - it is, of course, a prank. You can buy motorised fins whose only purpose is to give people a bit of a fright and it seems one guy decided to take one for a spin n the canal.
There's a man looking very pleased with himself testing out a motorised shark fin at Portobello lock. ¯\_(ツ)_/¯— Orlagh Ryan (@OrlaghRyan) September 15, 2015