Description Astropecten irregularis live in the Atlantic Ocean and in the Mediterranean Sea, but the two populations show differences in superomarginal plates. In particular, the specimens of Mediterranean have superomarginal plates devoid of spines (they are considered by some author as the subspecies Astropecten irregularis pentacanthus) while Atlantic populations are provided with one spine for each superomarginal plates (they are considered by some authors as the subspecies Astropecten irregularis irregularis) or more spines (they are considered by some authors as the subspecies Astropecten irregularis serratus and by some others as a variety of Astropecten irregularis irregularis).Author Pillon, Roberto· JPG file - 268.04 kB - 800 x 600 pixels
Extra information Camera Maker: Canon Camera Model: Canon PowerShot A650 IS Original Time Taken: 2011:06:09 23:39:40 Time Digitized: 2011:06:09 23:39:40 Shutter Speed: 1/500 sec Aperture: f/2.8 ISO Sensitivity: 80 Exposure Compensation: 0 EV Metering Mode: Center Weighted Average Flash Fired: Compulsory Flash Original Width: 4000 pixels Original Height: 3000 pixels White Balance: 1 Focal Length: 7.4 mm Focal Length Equivalent in 35mm Film: 34.610700918701
To upload: By uploading a picture you declare you have the right to do so. Please give as much information on the picture as possible; minimum requirement is photographer and/or copyright holder. Click here for complete Copyright Notice.