How do mussels attach themselves onto rocks? 🤔 Byssal threads are strong, stretchy, and silky fibres that mussels and other bivalves use to attach themselves onto surfaces, such as rocks in the intertidal zone! 🌊 As waves crash against the shore, these threads allow flexibility yet stay strongly attached to the rocks. Mussels can grow up to about 100 of these threads from a gland in their foot! California mussels are Marine bivalves with thick shells growing up to about 5in long. They are ofte

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