River Monster in the uk?

RIVER MONSTER ALERT

Tuesday November 8,2011

By Ted Jeory

A MYSTERY creature that eats geese in the blink of an eye has returned to haunt murky waters around the £9billion Olympic Park. Six years ago there were fears a crocodile was stalking big birds as they were sucked from a river’s surface – never to be seen again.Some experts then suggested a giant turtle was the culprit, but before the riddle could be solved the killer monster apparently vanished. Now it seems to be back. Mike Wells, a boat-dweller living on the River Lea in East London, was last week sitting on his barge with a friend when their peace was shattered. Mike said: “We were just passing the time of day looking at a Canada goose 30 yards away, but then it just suddenly disappeared. “It went down vertically. There wasn’t any hesitation, it went straight down. It didn’t come back up. My friend and I looked at each other slack-jawed.“Being a river person, I pieced together what we’d seen in seconds. The goose was prey to something.

Read rest here: http://www.express.co.uk/posts/view/282001/River-monster-alert

I wonder if it could be a large fish predator like a huge pike or something. A seal would have shown itself at some point but a fish wouldn't.