Three men who allegedly stole a penguin from Sea World were nabbed because they boasted about it on Facebook.
Sea World's Trevor Long told ABC Radio that Dirk the fairy penguin was recovering at the Gold Coast marine park after he was stolen and released in the Broadwater on Saturday night.
Staff were relieved to have an exhausted Dirk back, as was his penguin partner, Peaches.
Dirk had no chance of surviving alone in the wild, Mr Long said.
"It's totally foreign to this animal and it's very, very cruel,'' he told ABC Radio on Monday.