Restaurant manager Keith Valenti said there was never any intent to harm the lobster, and the decision to keep it in the tank was made to offer customers a little something extra.
"We bought a big lobster, started taking pictures with kids and it worked out real well," Mr Valenti told Reuters news agency.
But it was a "no brainer", he added, to agree to the request to return George to the ocean.
"We never intended him to be sold, just draw attention to the restaurant, and he did."
George was scheduled to be released in the waters off Kennebunkport, where lobster trapping is prohibited. Link -Thanks, Geekazoid!