File:Cassis madagascariensis (emperor helmet snail) 1 (24383291282).jpg

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Cassis madagascariensis Lamarck, 1822 - emperor helmet snail (oblique apical view) (public display, Bailey-Matthews Shell Museum, Sanibel Island, Florida, USA)

The gastropods (snails & slugs) are a group of molluscs that occupy marine, freshwater, and terrestrial environments. Most gastropods have a calcareous external shell (the snails). Some lack a shell completely, or have reduced internal shells (the slugs & sea slugs & pteropods). Most members of the Gastropoda are marine. Most marine snails are herbivores (algae grazers) or predators/carnivores.

From museum signage: "[The emperor helmet is the] largest helmet species and also one of the largest gastropods in the world, reaching around 35 cm (14 inches) in length. Thick, contrasting layers of dark-brown and alabaster colors make the emperor helmet one of the preferred shells for cameo carving. Living helmet shells feed on sea urchins and sand dollars."

Classification: Animalia, Mollusca, Gastropoda, Cassidae

More info. at:

en.wikipedia.org/wiki/Cassis_madagascariensis
Date
Source Cassis madagascariensis (emperor helmet snail) 1
Author James St. John

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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/24383291282. It was reviewed on 10 February 2016 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0.

10 February 2016

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current11:49, 10 February 2016Thumbnail for version as of 11:49, 10 February 20162,784 × 2,493 (3.57 MB)Patko erika (talk | contribs)Transferred from Flickr via Flickr2Commons

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