Conch

White Conch

Conch, White Conch or Dungkar (Skt. shankha Wyl. dung dkar, Tib. Dungkar) - a large white seashell which was used in Indian religious ceremonies, and also warfare, and was hence adopted in tantric Buddhist rituals. Usually one plays in a pair in which the musicians alternate in taking breath, to ensure the continuity of the sound.