File:Egg case of Busycon sinistrum (lightning whelk) (Sanibel Island, florida, USA) 5 (29668642175).jpg
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Summary
DescriptionEgg case of Busycon sinistrum (lightning whelk) (Sanibel Island, florida, USA) 5 (29668642175).jpg |
Busycon sinistrum Hollister, 1958 - egg case of a lightning whelk in Florida, USA. (March 2014) This species is also known as Sinistrofulgur sinistrum, which has been considered by some to be conspecific with Busycon perversum. 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 odd-looking structure shown above is a long, coiled egg case produced by a lightning whelk (<a href="https://www.flickr.com/photos/jsjgeology/23700747493">www.flickr.com/photos/jsjgeology/23700747493</a>). The structure consists of dozens of connected discs. Each disc contains many eggs, many of which eventually develop into baby lightning whelks, each bearing a protoconch shell. Classification: Animalia, Mollusca, Gastropoda, Neogastropoda, Busyconidae Locality: marine beach south of Donax Street, southern shoreline of Sanibel Island, southwestern Florida, USA More info. at: <a href="https://en.wikipedia.org/wiki/Sinistrofulgur_sinistrum" rel="nofollow">en.wikipedia.org/wiki/Sinistrofulgur_sinistrum</a> |
Date | |
Source | Egg case of Busycon sinistrum (lightning whelk) (Sanibel Island, florida, USA) 5 |
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@N05/29668642175 (archive). It was reviewed on 22 October 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
22 October 2019
Items portrayed in this file
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10 March 2014
0.0008 second
11.6 millimetre
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 03:42, 22 October 2019 | 3,390 × 1,645 (3.85 MB) | Rudolphous | Transferred from Flickr via #flickr2commons |
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Camera manufacturer | Exif version | 2.21 |
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Date and time of digitizing | 16:17, 10 March 2014 | |
Meaning of each component |
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Shutter speed | 10.280770743217 | |
APEX aperture | 4 | |
Exposure bias | −0.33333333333333 | |
Maximum land aperture | 4 APEX (f/4) | |
Metering mode | Pattern | |
Flash | Flash did not fire, auto mode | |
Supported Flashpix version | 1 | |
Color space | sRGB | |
Focal plane X resolution | 16,460.905405405 | |
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 | Manual white balance | |
Digital zoom ratio | 1 | |
Scene capture type | Standard |