Taufua, 30, has played 164 games over a decade for the Sea Eagles and scored 88 tries but has struggled to break into the line-up in recent times, making only one appearance this year.
He paid tribute to the club for showing faith in him, enabling him to find success including scoring a try in their 2013 grand-final loss against the Sydney Roosters.
"I am grateful to the people who helped shape and develop my career here, those who helped picked me up to return time and time again," he said.
"But most of all, I am grateful for the countless memories and experiences with my brothers I went to battle with."
Taufua has been linked with a move to Wakefield Trinity, where he is believed to be headed for the rest of the Super League season.
Manly coach Des Hasler said the winger had been a pleasure to coach.
"He has given the Sea Eagles tremendous service over a decade and is very much respected by not only his teammates and coaching staff, but by all of his peers across the game," he said.
"Jorge goes about his business in a quiet way and is a very humble man, but when it comes to sheer toughness and putting your body on the line for your team he is right up there."
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