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Summary
DescriptionConus milneedwardsi (Glory of India cone snail) 1.jpg |
Conus milneedwardsi Jousseaume, 1894 - Glory of India cone snail shell (abapertural view), modern (latest Holocene). (public display, Bailey-Matthews Shell Museum, Sanibel Island, 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. 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 - science.naturkundemuseum-bw.de/files/images/niederhofer_2...) 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. Classification: Animalia, Mollusca, Gatropoda, Neogastropoda, Conoidea, Conidae More info. at: en.wikipedia.org/wiki/Conus and en.wikipedia.org/wiki/Conus_milneedwardsi |
Date | |
Source | Conus milneedwardsi (Glory of India cone snail) 1 |
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@N05/24316508412. It was reviewed on 18 January 2016 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0. |
18 January 2016
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5 January 2016
image/jpeg
51d90b024a7c40a8271b7b399e6140e8f0fcbfac
1,609,599 byte
2,667 pixel
865 pixel
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 08:09, 18 January 2016 | ![]() | 865 × 2,667 (1.54 MB) | Tillman | Transferred from Flickr via Flickr2Commons |
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Camera manufacturer | Canon |
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Exposure time | 1/60 sec (0.016666666666667) |
F-number | f/10 |
ISO speed rating | 80 |
Date and time of data generation | 12:39, 5 January 2016 |
Lens focal length | 9.681 mm |
Image title | |
Width | 4,000 px |
Height | 3,000 px |
Bits per component |
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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 | 18:53, 16 January 2016 |
Y and C positioning | Co-sited |
Exif version | 2.21 |
Date and time of digitizing | 12:39, 5 January 2016 |
Meaning of each component |
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Flash | Flash fired, compulsory flash firing, red-eye reduction mode |
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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 | 11:53, 16 January 2016 |
Unique ID of original document | 16557B6433F5B5C96305B5ED1B503ECF |