File:Requin soyeux accompagné de coureurs arc-en-ciel (Ifremer 00577-68946 - 27935).jpg
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Summary
[edit]DescriptionRequin soyeux accompagné de coureurs arc-en-ciel (Ifremer 00577-68946 - 27935).jpg |
Français : Le requin soyeux est un poisson cartilagineux pélagique à la répartition cosmopolite. On le rencontre dans les eaux de l’Atlantique Ouest, des Caraïbes, ainsi que dans l’Ouest de l’Océan Indien et en Mer Rouge. Il évolue dans les eaux avoisinant les 23-24°C, et riches en bancs de thons. Mesurant en moyenne 2 à 3 m à l’âge adulte, cette espèce est reconnaissable à son corps allongé et fin, à la couleur grise et au ventre blanc. La position de la première nageoire dorsale est caractéristique de cette espèce : courte, elle est en arrière des nageoires pectorales.
Il est ici photographié au large des Seychelles, en compagnie de nombreux coureurs arc-en-ciel (Elagatis bipinnulata). Cette espèce de poisson vit en bancs, proche de la surface (entre 2 et 10 m de profondeur), dans les eaux pélagiques supérieures à 21°C, en Atlantique, Mer Rouge et zone Indo-Pacifique. Mesurant en moyenne 1 m de longueur, cette espèce de la famille des carangues est reconnaissable notamment grâce à son dos de couleur bleue-verte métallique, à ses deux bandes bleues placées sur ses flancs (séparées d'une bande jaune). English: The silky shark is a pelagic cartilaginous fish with a cosmopolitan distribution. It is found in the waters of the Western Atlantic, the Caribbean, as well as in the Western Indian Ocean and the Red Sea. It lives in waters around 23-24°C, and rich in schools of tuna. Measuring an average of 2 to 3 m as an adult, this species is recognizable by its elongated and thin body, its gray color and its white belly. The position of the first dorsal fin is characteristic of this species: short, it is behind the pectoral fins. It is photographed here off the Seychelles, in the company of numerous rainbow runners ( Elagatis bipinnulata ). This species of fish lives in schools, close to the surface (between 2 and 10 m deep), in pelagic waters above 21°C, in the Atlantic, Red Sea and Indo-Pacific zone. Measuring on average 1 m in length, this species of the jack family is recognizable in particular thanks to its metallic blue-green back, its two blue bands placed on its sides (separated by a yellow band). |
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Date | 21 October 2005 (upload date) | |||||||||
Source | Requin soyeux accompagné de coureurs arc-en-ciel | |||||||||
Author | Marc Taquet | |||||||||
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Keywords InfoField | Pelagic species; Fishes; Pelagic environment |
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current | 02:33, 11 November 2024 | 3,008 × 2,000 (2.11 MB) | OptimusPrimeBot (talk | contribs) | #Spacemedia - Upload of https://image.ifremer.fr/data/00577/68946/hd/27935.jpg via Commons:Spacemedia |
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- File:Requin soyeux accompagné de coureurs arc-en-ciel (Ifremer 00577-68946 - 27934).jpg
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- File:Requin soyeux accompagné de coureurs arc-en-ciel (Ifremer 00577-68946 - 27937).jpg
- File:Requin soyeux accompagné de coureurs arc-en-ciel (Ifremer 00577-68946 - 33165).jpg
Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Camera manufacturer | NIKON CORPORATION |
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Camera model | NIKON D100 |
Exposure time | 1/125 sec (0.008) |
F-number | f/11 |
Date and time of data generation | 07:27, 21 October 2005 |
Lens focal length | 24 mm |
Author | Marc Taquet |
Short title | Campagne Fadio n°5 |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | Ver.2.00 |
File change date and time | 07:27, 21 October 2005 |
Y and C positioning | Co-sited |
Exposure Program | Manual |
Exif version | 2.2 |
Date and time of digitizing | 07:27, 21 October 2005 |
Meaning of each component |
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Image compression mode | 4 |
APEX exposure bias | 0 |
Maximum land aperture | 4 APEX (f/4) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash did not fire |
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 | Manual exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Focal length in 35 mm film | 36 mm |
Scene capture type | Standard |
Scene control | None |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Unknown |
IIM version | 2 |
Keywords | sous-marine |