File:Crepidula fornicata (common Atlantic slipper snails) attached to a Strombus alatus shell (Cayo Costa Island, USA) 8 (25777146440).jpg
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[edit]DescriptionCrepidula fornicata (common Atlantic slipper snails) attached to a Strombus alatus shell (Cayo Costa Island, USA) 8 (25777146440).jpg |
Crepidula fornicata (Linnaeus, 1758) - common Atlantic slipper snails in Florida, USA (December 2013). 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. Shown above are common Atlantic slipper snails that are attached to a fighting conch, Strombus alatus. Slipper snails are unusual gastropods in that they lack a conical, strongly coiled shell. They are also famous for their odd reproductive behavior - they are often found in mating stacks (see above background). Large stacks have the oldest, largest females at the bottom and a young male at the top. After another slipper snail is added to a stack, the top male morphs into a female (sequential hermaphrodism). Many misperceive the species name "fornicata" as being a reference to the mating stacks. The root word of "fornicata" is Latin for "arch", and actually refers to the strongly convex, arched shape of the shell. "Fornicate" means what it does today because prostitutes in ancient Rome often loitered under city arches. Classification: Animalia, Mollusca, Gastropoda, Calyptraeidae Locality: marine beach near the southern end of the western shoreline of Cayo Costa Island, Gulf of Mexico coast of southwestern Florida, USA (vicinity of 26° 36' 51.30" North latitude, 82° 13' 24.39" West longitude) More info. at: en.wikipedia.org/wiki/Common_slipper_shell |
Date | |
Source | Crepidula fornicata (common Atlantic slipper snails) attached to a Strombus alatus shell (Cayo Costa Island, USA) 8 |
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@N05/25777146440. It was reviewed on 14 August 2016 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0. |
14 August 2016
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current | 17:36, 14 August 2016 | ![]() | 3,964 × 2,630 (5.38 MB) | Ser Amantio di Nicolao (talk | contribs) | Transferred from Flickr via Flickr2Commons |
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Camera model | TG-1 |
Exposure time | 1/320 sec (0.003125) |
F-number | f/16 |
ISO speed rating | 250 |
Date and time of data generation | 10:01, 16 December 2013 |
Lens focal length | 13.47 mm |
Latitude | 26° 37′ 6.04″ N |
Longitude | 82° 13′ 29.84″ W |
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Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 314 dpi |
Vertical resolution | 314 dpi |
Software used | Adobe Photoshop Elements 13.0 (Macintosh) |
File change date and time | 13:25, 26 March 2016 |
Y and C positioning | Co-sited |
Exposure Program | Normal program |
Exif version | 2.3 |
Date and time of digitizing | 10:01, 16 December 2013 |
Meaning of each component |
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Color space | sRGB |
File source | Digital still camera |
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Name of GPS area | Captiva Island Golf Club |
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Serial number of camera | BCA539215 |
Date metadata was last modified | 07:25, 26 March 2016 |
Unique ID of original document | 6573F815C189726FCCFC86CC54AFBDAA |
IIM version | 12,819 |