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File:Littoraria angulifera (mangrove periwinkle) (Cayo Costa Island, Florida, USA) 2 (24317573135).jpg

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Littoraria angulifera (Lamarck, 1822) - mangrove periwinkle in Florida, USA (January 2016).

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.

The snail shown above is a living mangrove periwinkle, Littoraria angulifera, on a large piece of driftwood. The holes in the surrounding wood were drilled by bivalves. The mangrove periwinkle is a biofilm grazer.

Classification: Animalia, Mollusca, Gastropoda, Littorinidae

Locality: marine beach at the southern tip of Cayo Costa Island, Gulf of Mexico coast of southwestern Florida, USA (vicinity of 26° 36' 48.74" North latitude, 82° 13' 19.91" West longitude)

More info. at:

en.wikipedia.org/wiki/Littoraria_angulifera
Date
Source Littoraria angulifera (mangrove periwinkle) (Cayo Costa Island, Florida, USA) 2
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@N05/24317573135. It was reviewed on 3 February 2016 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0.

3 February 2016

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current16:11, 3 February 2016Thumbnail for version as of 16:11, 3 February 20163,268 × 1,885 (3.31 MB)Patko erika (talk | contribs)Transferred from Flickr via Flickr2Commons

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