Mussels create byssal threads, known as the mussel's "beard," to attach themselves both to rocks and to each other. They use their sensitive foot to mold the threads from scratch and apply a waterproof adhesive that makes superglue jealous. Watch our full video: "This Mussel Grows a Beard with its Foot!" #DeepLook #mussels #shortsreels | Deep Look • PBS

Mussels create byssal threads, known as the mussel's "beard," to attach themselves to rocks and each other. They use their sensitive foot to mold the threads from scratch and apply a waterproof adhesive that makes even superglue jealous. | Deep Look • PBS