MASKED Dancer fans are convinced they have worked out who is behind Sea Slug – a Spice Girl.
The sassy underwater creature showed off their moves to Pussycat Dolls' When I Grow Up on the show, and those watching at home think its Mel B after spotting a series of clues.
Taking to Twitter to speculate, one person wrote: “#MaskedDancerUK sea slug is Mel B !! The clues all make sense - sang at the olympics , 1996 was when wannabe was number 1 - a coach on the voice Australia and known for 2 Colours ( leopard print ).”
While a second tweeted: “Sea slug .- Mel B #MaskedDancerUK.”
And another added: “Sea slug has to be Mel B #MaskedDancerUK.”
In their VT, Sea Slug said they are a "friendly, squishy softy" that can be a "little spiky if they have to be".
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They also drew attention to their bright, glow in the dark colours and said they were going to "make a splash" on the dance floor.
After their performance, Sea Slug gave a final clue and said they know "how to scrub up well".
Fans have really struggled with the identity of sea slug, but the panel have had a few ideas.
Peter Crouch wasted no time guessing fashion expert, DJ and chef Gok Wan was the celeb under the mask.
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Davina McCall guessed along the same lines, while Oti Mabuse went for I'm A Celeb star Fleur East.
Jonathan Ross seemed to be in fantasy land with his guess of One Direction's Zayn Malik.