Astropecten irregularis pentacanthus
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).
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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
added on 2012-02-111 816 viewsERMS taxa Astropecten irregularis pentacanthus (Delle Chiaje, 1827)
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
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