File:Murex pecten (Venus comb murex snail) 1 (24693652870).jpg
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[edit]DescriptionMurex pecten (Venus comb murex snail) 1 (24693652870).jpg |
Murex pecten Lightfoot, 1786 - Venus comb murex snail (abapertural view) (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. Muricids are predatory snails having shells that are often spinose. They principally prey on molluscs - clams and other snails - by drilling through the prey animal's mineralized shell. Muricid drill holes are relatively small and circular. The Venus comb murex snail shown above is part of the Indo-West Pacific Province: "The world's largest and richest province extends from the Red Sea and East Africa across the Indian Ocean, then touches northern Australia and southern Japan to extend eastward throughout the "South Seas" to Hawaii and Easter Island. Probably 5,000 marine species are found in its shallow coral waters." [info. from museum signage] Classification: Animalia, Mollusca, Gastropoda, Neogastropoda, Muricidae Locality: unrecorded/undisclosed/unspecified More info. at: <a href="https://en.wikipedia.org/wiki/Venus_comb_murex" rel="nofollow">en.wikipedia.org/wiki/Venus_comb_murex</a> |
Date | |
Source | Murex pecten (Venus comb murex 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@N05/24693652870 (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
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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/4 |
ISO speed rating | 80 |
Date and time of data generation | 16:29, 3 January 2016 |
Lens focal length | 11.6 mm |
Orientation | Normal |
Horizontal resolution | 180 dpi |
Vertical resolution | 180 dpi |
Software used | Adobe Photoshop Elements 13.0 (Macintosh) |
File change date and time | 06:55, 12 February 2016 |
Y and C positioning | Centered |
Exif version | 2.21 |
Date and time of digitizing | 16:29, 3 January 2016 |
Meaning of each component |
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APEX shutter speed | 5.9068905902692 |
APEX aperture | 4 |
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 | 16,460.905405405 |
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 | Auto white balance |
Digital zoom ratio | 1 |
Scene capture type | Portrait |
Lens used | 6.2-18.6 mm |
Date metadata was last modified | 23:55, 11 February 2016 |
Unique ID of original document | 0E9AC38006B5719093AB1FDA50AA919D |