File:Mytilus edulis (Atlantic blue mussel shell) (Mt. Desert Island, Maine, USA) 2.jpg
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Summary
[edit]DescriptionMytilus edulis (Atlantic blue mussel shell) (Mt. Desert Island, Maine, USA) 2.jpg |
English: Mytilus edulis Linnaeus, 1758 - Atlantic blue mussel shells in Maine, USA.
Bivalves are bilaterally symmetrical molluscs having two calcareous, asymmetrical shells (valves) - they include the clams, oysters, and scallops. In most bivalves, the two shells are mirror images of each other (the major exception is the oysters). They occur in marine, estuarine, and freshwater environments. Bivalves are also known as pelecypods and lamellibranchiates. Bivalves are sessile, benthic organisms - they occur on or below substrates. Most of them are filter-feeders, using siphons to bring in water, filter the water for tiny particles of food, then expel the used water. The majority of bivalves are infaunal - they burrow into unlithified sediments. In hard substrate environments, some forms make borings, in which the bivalve lives. Some groups are hard substrate encrusters, usually using a mineral cement to attach to rocks, shells, or wood. The fossil record of bivalves is Cambrian to Recent. They are especially common in the post-Paleozoic fossil record. Seen here are disarticulated Atlantic blue mussel shells, Mytilus edulis. This species occurs in much of the North Atlantic Ocean. Mussels are sessile, benthic, epifaunal, filter-feeding, hard substrate encrusters that are abundant in many intertidal rocky shore environments. They attach to substrates such as rockgrounds, hardgrounds, etc. by extruding byssus (a type of organic material), in the form of byssal threads. Classification: Animalia, Mollusca, Bivalvia, Pteriomorphia, Mytiloida, Mytilidae Locality: gravel beach at Hulls Cove, eastern side of Route 3, northeastern Mt. Desert Island, coastal Maine, USA (44° 24.940’ North latitude, 68° 15.047’ West longitude) See info. at: en.wikipedia.org/wiki/Blue_mussel |
Date | |
Source | https://www.flickr.com/photos/47445767@N05/50592230468/ |
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@N05/50592230468. It was reviewed on 18 November 2020 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
18 November 2020
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 00:59, 18 November 2020 | 3,008 × 2,000 (3.92 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/50592230468/ with UploadWizard |
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Camera manufacturer | NIKON CORPORATION |
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Camera model | NIKON D70s |
Exposure time | 1/160 sec (0.00625) |
F-number | f/6.3 |
ISO speed rating | 200 |
Date and time of data generation | 10:30, 12 September 2006 |
Lens focal length | 70 mm |
Width | 3,008 px |
Height | 2,000 px |
Bits per component |
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Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | Adobe Photoshop Elements 18.0 (Macintosh) |
File change date and time | 03:18, 12 November 2020 |
Y and C positioning | Co-sited |
Exposure Program | Not defined |
Exif version | 2.21 |
Date and time of digitizing | 10:30, 12 September 2006 |
Meaning of each component |
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Image compression mode | 4 |
APEX shutter speed | 7.321928 |
APEX aperture | 5.310704 |
APEX exposure bias | 0 |
Maximum land aperture | 4.3 APEX (f/4.44) |
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Light source | Unknown |
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DateTime subseconds | 10 |
DateTimeOriginal subseconds | 10 |
DateTimeDigitized subseconds | 10 |
Supported Flashpix version | 1 |
Color space | sRGB |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Focal length in 35 mm film | 105 mm |
Scene capture type | Standard |
Scene control | None |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Unknown |
Serial number of camera | 1004a0cc |
Lens used | 18.0-70.0 mm f/3.5-4.5 |
Date metadata was last modified | 22:18, 11 November 2020 |
Unique ID of original document | 9CB18D4B891AC11DCE362857FFA66697 |
IIM version | 32,709 |