Shah Rukh Khan-starrer ‘Zero’ is turning out to be a film full of surprises. The actor has apparently shot underwater sequences for his dwarf film in a big way. The team shot for the grueling sequences in the US with SRK for whom the challenging scenes were just a day’s work. Directed by Aanand L Rai, the film also stars Katrina Kaif and Anushka Sharma. The shooting of ‘Zero’ has been wrapped up and Shah Rukh is busy enjoying a holiday in Spain with his kids and wife Gauri. Shah Rukh is expected to begin biopic on astronaut Rakesh Sharma soon after.