New Zealand Seashore
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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 *
DSC2403Surf clamMactraSpisulamurchisoniLargeovaltrough shellclamruheruhedetaillateral toothhingediscorslive animalsiphonextendedTaieri Mouth