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Story: Coastal shoreline

Common sea snails

Image
Common sea snails

A large cat’s eye snail, surrounded by tiny periwinkles, rests upside down on coastal rocks. The snail has retreated into its shell, closing its blue-green ‘trapdoor’. This protects it from predators, and from drying out. The periwinkles seal their openings with mucus and may seek shelter in crevices when the tide is out.

Using this item

Te Ara - The Encyclopedia of New Zealand

by Melanie Lovell-Smith

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How to cite this page

Maggy Wassilieff, Coastal shoreline – The rocky coast – upper shore, Te Ara – the Encyclopedia of New Zealand, https://teara.govt.nz/en/photograph/4813/common-sea-snails (accessed 6 June 2026).

Story by Maggy Wassilieff, published 2 March 2009.

Comments

Miranda Daisy Johnson
23 February 2015
My name is Miranda Daisy Johnson and I am 12 and a half years old. I really enjoy your website and visit here frequently. Please feel free to send me email updates because I am very interested in sea life in these waters!!!1!1!1!1!!1!!!!111 xD ;P xoxox <3<3<3
tahlia
05 June 2013
My name is Tahlia and i am 8 years old. My class has been studying the rocky shore and i have found your website fantastic. cheers!!!