File:Conus textile (textile cone snail) 4 (30876171420).jpg
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Summary
[edit]DescriptionConus textile (textile cone snail) 4 (30876171420).jpg |
Conus textile Linnaeus, 1758 - textile cone snail shell (abapertural view), modern (latest Holocene). 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 conid gastropods (cone shells) are fascinating marine snails for a couple reasons - they have attractively-shaped, colorful shells and they are killers. The conids are predatory, as are many other marine snails, but they take down their prey in an unusual fashion. The radula of most snails is a mineralized or heavily sclerotized mass of small teeth that scrapes across a substrate during feeding. Conid snails have a toxoglossate radula - one that has been evolutionarily modified into tiny, unattached, toxin-bearing, harpoon-like darts (see photo - <a href="http://science.naturkundemuseum-bw.de/files/images/niederhofer_2ab_6b_radula.jpg" rel="nofollow">science.naturkundemuseum-bw.de/files/images/niederhofer_2...</a>) that can be fired at prey. Each dart is an individual tooth. The nickname "killer snails" is well deserved (even people have been killed). Some species have incredibly powerful toxins, while in other species the toxin has little effect on humans. Conus textile, the textile cone snail, is one of the few species that has killed people. This species occurs in the Red Sea, the Indian Ocean, and the Pacific Basin. Death occurs by respiratory failure. Classification: Animalia, Mollusca, Gastropoda, Neogastropoda, Conoidea, Conidae More info. at: <a href="https://en.wikipedia.org/wiki/Conus" rel="nofollow">en.wikipedia.org/wiki/Conus</a> and <a href="https://en.wikipedia.org/wiki/Conus_textile" rel="nofollow">en.wikipedia.org/wiki/Conus_textile</a> |
Date | |
Source | Conus textile (textile cone snail) 4 |
Author | James St. John |
Licensing
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/30876171420. 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
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current | 03:55, 22 October 2019 | 1,620 × 2,914 (2.6 MB) | Rudolphous (talk | contribs) | Transferred from Flickr via #flickr2commons |
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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/9 |
ISO speed rating | 80 |
Date and time of data generation | 17:07, 24 November 2016 |
Lens focal length | 7.23 mm |
Image title | |
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 13.0 (Macintosh) |
File change date and time | 22:20, 25 November 2016 |
Y and C positioning | Co-sited |
Exif version | 2.21 |
Date and time of digitizing | 17:07, 24 November 2016 |
Meaning of each component |
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Image compression mode | 3 |
APEX shutter speed | 5.90625 |
APEX aperture | 6.34375 |
APEX exposure bias | −0.33333333333333 |
Maximum land aperture | 3.34375 APEX (f/3.19) |
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 | Portrait |
Lens used | 6.2-18.6 mm |
Date metadata was last modified | 15:20, 25 November 2016 |
Unique ID of original document | 882A88089D0E45C2A3AB23C5718F4EE1 |