Using Photoshop, the team created an image of what a 591ft penguin would look projected onto the iconic City of London building.

© Rex Features
The move has been suggested in order to promote the zoo itself.
The press release accompanying the penguin proposition read: "[ZSL London Zoo plan] to approach city bigwigs with the bold concept of turning the prominent Swiss Re Building - more commonly known as The Gherkin - into a giant penguin."

© Rex Features
London Zoo's head of communications Emma Edwards said: "We don't want anyone to miss our penguins, and they certainly wouldn't be able to miss this one looming over the capital.
"We know it's audacious, but let's be honest - penguins are a lot more interesting than gherkins."
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