A lost emperor penguin named Happy Feet who turned up on a beach in New Zealand has been taken home after under-going life-saving surgery.
The 3ft bird, who was left desperately ill after eating sand that he thought was snow, was taken back to the Antarctic on a research ship.
He was released down a slide into the water two months after he was discovered disorientated more than 1,000 miles from home.
But although he has been released, the penguin has been fitted with a tracking device so web users can keep track of where he goes over the next few months.
Vet Lisa Argilla, who looked after Happy Feet at Wellington Zoo, said she was pleased that he had been released back into the Southern Ocean.
She said: 'He slid down his specially-designed penguin slide backwards, but once he hit the water he spared no time in diving off away from the boat and all those "aliens" who have been looking after him for so long.'
A team from the National Institute of Water and Atmospheric Research and the boat crew were all on deck to wave him goodbye.
'It's an indescribable feeling to see a patient finally set free,' said Miss Argilla.
Voyage leader Richard O'Driscoll told Wellington's The Press newspaper that apart from giving the veterinary team a few nips at feeding time, the penguin had been a well-behaved passenger.
'It's been a pleasure to have Happy Feet on board,' he said. 'We're just happy to help him on his journey home.'
But just in case he gets lost again, the wayward penguin has been fitted with a tracking device, which will eventually drop off, so the team - and the public - can follow his progress back home.
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