File:Mytilus sp. (mussels) (Yaquina Head, Oregon, USA) 1.jpg
![File:Mytilus sp. (mussels) (Yaquina Head, Oregon, USA) 1.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/d/db/Mytilus_sp._%28mussels%29_%28Yaquina_Head%2C_Oregon%2C_USA%29_1.jpg/398px-Mytilus_sp._%28mussels%29_%28Yaquina_Head%2C_Oregon%2C_USA%29_1.jpg?20231128210029)
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[edit]DescriptionMytilus sp. (mussels) (Yaquina Head, Oregon, USA) 1.jpg |
English: Mytilus sp. - mussels in Oregon, 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 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. Mussels are encrusting bivalves 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. Seen here are mussel shells, Mytilus sp., along a rocky shoreline at Yaquina Head, Oregon. The rocks here are part of the Ginkgo Basalt, which is one of many lava flows in the Miocene-aged Columbia River Flood Basalt. Classification: Animalia, Mollusca, Bivalvia, Pteriomorpha, Mytilida, Mytilidae Locality: southern side of Yaquina Head, coastal Oregon, USA Info. at: en.wikipedia.org/wiki/Mytilus_(bivalve) |
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Source | https://www.flickr.com/photos/47445767@N05/53357988792/ |
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@N05/53357988792. It was reviewed on 28 November 2023 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
28 November 2023
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current | 21:00, 28 November 2023 | ![]() | 2,848 × 4,288 (6.69 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/53357988792/ with UploadWizard |
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File change date and time | 15:14, 18 October 2023 |
Y and C positioning | Co-sited |
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Exif version | 2.21 |
Date and time of digitizing | 13:44, 3 August 2012 |
Meaning of each component |
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File source | Digital still camera |
Scene type | A directly photographed image |
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Date metadata was last modified | 11:14, 18 October 2023 |
Unique ID of original document | A70EA54623673D417BB6FCBB9994A7C9 |