Conch (pronounced “konk”), also known as a "seashell horn" or "shell trumpet", is a musical instrument, a wind instrument that is made from a seashell, the shell of several different kinds of very large sea snails.
The shells of large marine gastropods are prepared by cutting a hole in the spire of the shell near the apex, and then blowing into the shell as if it were a trumpet, as in blowing horn. Sometimes a mouthpiece is used, but some shell trumpets are blown without one.
Various species of large marine gastropod shells can be turned into "blowing shells", but some of the best-known species are: the sacred chank or shankha (Turbinella pyrum), the "Triton's trumpet" (Charonia tritonis), and the Queen Conch (Strombus gigas).
Why blow it?
Pu (pronounced 'poo') is the Hawaiian Name for Conch Shell. A gift from the Ocean, the Pū comes out of the life giving waters with a sound that flows across the 'Aina ( land ).
The blowing of the Pu, a deep part of the Hawaiian culture, has multiple uses and communicates various meanings in both Religious and secular traditions.
Blowing the Pu is sometimes used before a ceremony to mark the official beginning.
To blow the Pu is a call to the divine. The blowing of the Pu should always be accompanied by protocol. When it's blown, how many times and in which directions all have a complex set of meanings. The meanings of the number of blows are so sacred that we do not reveal them in print. Rather, we share them with you in your Sacred Ceremony. The blows in ceremony symbolize the journey of the Ancient Hawaiians as well as your own journey in that Eternal moment.