I found a compact camera, caked in mud, which had presumably been revealed by the tide going out that morning. It looked a little something like:
It's a Canon PowerShot SX230 HS, and was inside a 'Go Canada' red bag. Neither were water/mud proof, I'm afraid.
After a bit of a clean-up, I was able to open the memory card holder and load-up the photos (well done Sandisk!!), in the hope of identifying the owner. And success - it seems clear this is who it belongs to:
He also has another shot, helpfully showing him holding-up his Boarding Pass to the camera, so I also know his name: REID JANNSEN. And that he came in on an Air Canada flight from Toronto on 8th Jan. From the photos, as the last one is of him near the Millennium Bridge, I can only assume he dropped it there a couple of days ago.
I would be amazed if the camera works again (it's drying out at the moment before I try it), but would be delighted to return it, with the memory card to Reid if we can track him down!
I will e-mail Air Canada to see if they can help out, but otherwise it's over to the power of social media to try and track him down!!!
***UPDATE 1*** - Air Canada have tracked him down and e-mailed, so there's a chance for a reunion...
***UPDATE 2*** - It turns out the photos of Reid were taken by the camera owner, his Aunt. She kindly e-mailed me once Air Canada tracked her down and passed my details on. This evening, I was then able to drop the camera off at their hotel... and have just had an e-mail confirming that they've got the camera back!