Siddharth, who has also showed his acting prowess as the younger version of actor Aamir Khan's character in "Dhoom: 3" earlier, decided to learn swimming the very moment and asked for the crew's support. He also picked river Ganga as his practice ground instead of a swimming pool.
The 14-year-old boy then performed the underwater sequence with elan.
Siddharth will essay the role of younger version of the male lead in the Life OK show. The show is slated to go on air soon, but a date is yet to be locked.