Byssus
Pinna nobilis shell and byssus
Byssus is a silky filament by which certain molluscs attach to hard surfaces. It also means a rare fabric. It is also called sea silk, and is its fibre source.
Byssus Media
A mussel (genus Mytilus), attached to a rock by its byssus
Illustration of the byssus of Dreissena polymorpha, the freshwater zebra mussel
