Conch shell is a significant instrument in Hinduism. The conch shell is known as the 'Shankha' in Sanskrit. It is a symbol of purity, brilliance and auspiciousness. In Hinduism, the sound from the conch is associated with the sacred syllable 'Om' which is believed to be the first sound of creation. The Shankha or conch marks the beginning of any good work. The sound of the conch is believed to the purest form of sound which ushers in freshness and new hope.
The word 'Shankha' literally means pacifying the inauspicious and impure. Therefore the conch shell is blown at the beginning of any religious ritual in Hinduism.