Krsna's conchshell is known as Pancajanya. This Pancajanya conch is also mentioned in the Bhagavad-gita. Krsna sounded it before the Battle of Kuruksetra. It is said that when Lord Krsna blows on His transcendental conchshell, the wives of the demons become subject to abortions, and the wives of the demigods become blest with all auspiciousness. In this way, the sound of Krsna's conchshell used to vibrate and circulate all over the world.