New Zealand Seashore

DSC_2403 Oval trough clam, or ruheruhe (Spisula murchisoni) detail of fine traverse ridges on the lateral teeth of the hinge, which distinguished it from the almost identical Large trough shell (S. discors). Buried in clean sand off very exposed coasts. Shell colour usually white with a straw coloured periostracum. Caroline Bay, Timaru *

734 / 2079

DSC_2403 Oval trough clam, or ruheruhe (Spisula murchisoni) detail of fine traverse ridges on the lateral teeth of the hinge, which distinguished it from the almost identical Large trough shell (S. discors). Buried in clean sand off very exposed coasts. Shell colour usually white with a straw coloured periostracum. Caroline Bay, Timaru *

DSC 2403 Surf clam Mactra Spisula murchisoni Large oval trough shell clam ruheruhe detail lateral tooth hinge discors live animal siphon extended Taieri Mouth