Story: Starfish, sea urchins and other echinoderms

Sand dollars

Sand dollars

These sand dollars or snapper biscuits were collected just below the low-tide level. If you step barefoot on one it feels like sandpaper, because of the covering of tiny spines. Sand dollars swallow vast quantities of muddy sand to extract food. When the animals die their disc-like shells are often cast up onto the beach, usually broken into segments.

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Te Ara - The Encyclopedia of New Zealand
Photograph by Melanie Lovell-Smith

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How to cite this page:

Maggy Wassilieff, 'Starfish, sea urchins and other echinoderms - Sea urchins', Te Ara - the Encyclopedia of New Zealand, (accessed 22 July 2024)

Story by Maggy Wassilieff, published 12 Jun 2006