Huge I'm A Celebrity secret that even Julia Morris and Robert Irwin don't know

I'm a Celebrity... Get Me Out Of Here! has been back on our screens for week and a source has told Yahoo Lifestyle that the show will be dropping one more celebrity into the jungle to shake things up.

"This person is a 'famous' Australian actress that is known internationally," the source revealed, before saying that Network 10 has created code names for the celebrities with the yet-to-be-revealed celebrity using the moniker 'Seal'.

It follows a trend of the network using code names every year to keep the celebrities under wraps until they enter the jungle.

How I'm A Celeb producers keep cast anonymous

"Network 10 created codenames that allow producers to get the ‘celebrities’ into 'the jungle' without worrying about who hears their name," the insider said, saying this year's theme for code names is animals you would find in the ocean, with last year's theme being superhero code names.

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"Producers have been referring to Hughesy as 'the dolphin' for weeks," they said, before revealing the code names for the other celebs.

"Matty J was given the code name Manta-Ray, Nicky Buckley was Narwhal, Reggie Sorenson was the Red Emperor, Shayna Jack was Starfish, Tina Provis was turtle, Zach Tucky was Zebra Fish, Geraldine Hickey was Great White, Samantha Moitzi was Seagull, Max Balegde was Mussels, Sam Thaiday was Squid and Harrison Reid was Humpback Whale.

'We don't even tell Julia and Robert'

"To get the cast of 'celebrities' into the jungle without revealing the line-up is a covert operation that has been getting more complex every year," the insider said, citing the moment Sam Dastyari who once competed on the show found the names of all the celebs before entering the jungle and texted the complete cast list to a journalist in Australia.”

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“We don't even tell Julia Morris and Robert Irwin until we absolutely have to because we literally trust nobody," they continued. "“Some people swore black and blue they knew our cast this year but most were way off and that is done on purpose."

The insider also spilt that the flights to South Africa are all spread out, with celebrities arriving at different times on different days, with some celebs flying to South Africa up to 10 days before they enter the jungle, while some others only arrive the day before.

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