Manly forward Addin Fonua-Blake has re-signed with the club until the end of the 2018 season.

Fonua-Blake made his debut against the Parramatta Eels in Round 7 and was chosen in the New Zealand train-on squad for the recent Four Nations tournament.

Manly coach Trent Barrett said Fonua-Blake will be a key part of the Manly forward pack next season.

"The contract extension is a good reward for Addin. He still has a lot of hard work to do, but we were happy to extend his deal," Barrett said.

"Addin is a big skilful player who gives us plenty of muscle up front. He is doing really well and we are pleased to have him with us."

Fonua-Blake is grateful for the opportunities he has received at the Sea Eagles.

"I am really enjoying playing at Manly. The extension gives me a chance to further develop my game by working with experienced forwards like Martin Taupau and Nate Myles," Fonua-Blake said.

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