Dakshinavarti shankha, also referred to as Valampuri shankhu and Sri Lakshmi shankha is a sacred Hindu conch. It refers to the shell of a large sea snail from the Indian Ocean, but one that has a rare reverse-turning spiral.
A Sri Lakshmi conch shell
Sea Shell from the Indian Ocean, Arabian Sea and bay of Bengal.
A shankha has religious ritual importance in Hinduism.
Carved conches or Vamavarta shankhas, c. 11–12th century, Pala period, India: The leftmost one is carved with the image of Lakshmi and Vishnu, and has silver additions.
A shankha, 19th century
A Shankha (conch shell) with Vishnu emblem carved
Hindu priest blowing a shankha during a puja