Animal welfare campaigners have called for the release of 15 penguins "trapped in a basement without sunlight or fresh air" at the Sea Life London Aquarium - with former Undertones singer Feargal Sharkey daring the company's chief executive to swap places with the birds.

The Free The Fifteen demonstration, organised by Freedom For Animals with support from Born Free and The Express newspaper, saw between 250 and 300 people attend on Sunday morning to protest against the captivity of 15 gentoo penguins at the riverside attraction in Westminster . The aquarium owned by Merlin Entertainments opened its first penguin exhibit in May 2011, introducing 10 gentoo penguins from Edinburgh Zoo who "have now endured 14 years in a basement" equipped with a pool of only six to seven feet deep, ac

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