As most moviegoers now know, “Pirates of the Caribbean: At World’s End” contains a 20-minute climactic sea battle in a massive maelstrom. There is said to be more visual effects in this one sequence than are found in many VFX-driven feature films in their entirety.
The big challenge in this “Pirates” sequence — and the new film — was the water.
here are 3 featurettes
[youtube=http://www.youtube.com/watch?v=TnRTPMPVgs8&w=560]
[youtube=http://www.youtube.com/watch?v=9-ZSX2Mv4YI&w=560]
[youtube=http://www.youtube.com/watch?v=Xw523wrHDcs&w=560]