File:Crepidula fornicata (common Atlantic slipper snail) (Marco Island, Florida, USA) 1.jpg
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[edit]DescriptionCrepidula fornicata (common Atlantic slipper snail) (Marco Island, Florida, USA) 1.jpg |
English: Crepidula fornicata (Linnaeus, 1758) - common Atlantic slipper snail shell from 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. Seen here is a common Atlantic slipper snail, Crepidula fornicata, an unusual gastropod that lacks a conical, strongly coiled shell. This animal is notable for its odd reproductive behavior - multiple individuals can be found in mating stacks (see: www.flickr.com/photos/jsjgeology/25957487582 ). 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: Marco Island, Gulf of Mexico coast of southern Florida, USA Info. at: en.wikipedia.org/wiki/Common_slipper_shell |
Date | |
Source | https://www.flickr.com/photos/47445767@N05/52566436676/ |
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@N05/52566436676. It was reviewed on 16 December 2022 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
16 December 2022
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 14:24, 16 December 2022 | 2,233 × 1,313 (1.74 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/52566436676/ with UploadWizard |
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Camera manufacturer | Canon |
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Camera model | Canon PowerShot D10 |
Exposure time | 1/60 sec (0.016666666666667) |
F-number | f/11 |
ISO speed rating | 80 |
Date and time of data generation | 18:00, 10 November 2022 |
Lens focal length | 11.614 mm |
Width | 4,000 px |
Height | 3,000 px |
Bits per component |
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Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 180 dpi |
Vertical resolution | 180 dpi |
Software used | Adobe Photoshop Elements 18.0 (Macintosh) |
File change date and time | 01:10, 16 December 2022 |
Y and C positioning | Co-sited |
Exif version | 2.21 |
Date and time of digitizing | 18:00, 10 November 2022 |
Meaning of each component |
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Image compression mode | 3 |
APEX shutter speed | 5.90625 |
APEX aperture | 6.90625 |
APEX exposure bias | −0.66666666666667 |
Maximum land aperture | 4 APEX (f/4) |
Metering mode | Pattern |
Flash | Flash fired, compulsory flash firing, red-eye reduction mode |
Supported Flashpix version | 1 |
Color space | sRGB |
Focal plane X resolution | 16,460.905349794 |
Focal plane Y resolution | 16,483.516483516 |
Focal plane resolution unit | inches |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Custom image processing | Normal process |
Exposure mode | Manual exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Scene capture type | Standard |
Lens used | 6.2-18.6 mm |
Date metadata was last modified | 20:10, 15 December 2022 |
Unique ID of original document | B20E214D7C8ABC4E675D70AB76643366 |
IIM version | 32,767 |