Daniel Radcliffe has said in a letter to fans that the Triwizard Tournament's underwater sequence in Harry Potter and the Goblet of Fire will be spectacular.
The letter, sent to DanRadcliffe.co.uk's correspondent Minoska, included thanks for the star's recent birthday wishes and gifts:
I had a brilliant birthday, made all the more special by the thousands of cards and messages I received from all over the world.
Filming on Goblet of Fire is going very well. I spent a month in a tank filming the underwater task and I did think I really was going to sprout gills!! It is going to be a spectacular sequence! I have already worked with some of the new actors - Brendan Gleeson and Miranda Richardson - and they are all fantastic. As are the actors playing Cedric, Fleur, Cho, and Krum: Robert Pattison, Clemence Poesy, Katie Leung and Stanishlav Ianevski.