Fishing for California mussel

The California mussel is a large, thick-shelled bivalve with a heavy, ribbed, blue-black shell often worn or eroded, anchored by strong byssal threads. It forms massive beds on surf-exposed rocks and pilings along the Pacific coast of North America. The shell reaches about 8 inches. A dominant competitor for space, it settles densely and stays fixed to the rock. This summary was AI generated