Il bisso di Chiara Vigo: ultima sacerdotessa di un'arte iniziatica
Silk is usually made from the cocoons spun by silkworms - but there is another, much rarer, cloth known as sea silk, or byssus, which comes from a clam.
"The Byssus (sea sillk) is the soul of the Sea". (to sell it) "would be like commercializing the flight of the eagle". it is gathered without hurting the protected clams it comes from, and it takes dives to gather of material
Chiara's loom - article about Vigo who spins and weaves sea silk from clams