DSC_4350 Nesting mussel, or kuku mau toka (Musculus impactus) clean shell. Found under stones at low tide throughout New Zealand, though typically the byssal threads of this species form a dense mat, which completely hide the animal. Harrington Point, Otago Harbour *
DSC_8611 Boring mussel (Zelithophaga truncata) valves are covered in a rich-brown periostrachum,which developes a dense, closely cropped stubble at the pointed end. Uses an acid secretion to bore into soft rocks. Tahunanui *
