DSC_8675 White rock snail or hopetea (Dicathais orbita) shells are large and heavy. Some shells have very strong spiral chords - 'Cart rut shells', as shown here, while others have weaker ribs, and a very few are almost smooth.
DSC_8683 White rock snail or hopetea (Dicathais orbita) shells large and heavy, some have very strong spiral chords - 'Cart rut shells' (left), while others have weaker ribs - 'Ridged shells' (right), and a very few are almost smooth.
DSC_8676 White whelk (Haustrum lacunosum) common in southern New Zealand, on exposed or sheltered rocky shores in the mid to lower intertidal zone.
