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Dendraster excentricus

Dendraster excentricus
Photo Information
Copyright: Roy Soundy (RoyHenry) Silver Note Writer [C: 6 W: 0 N: 18] (178)
Genre: Animals
Medium: Color
Date Taken: 2005-04-02
Categories: Echinoderms
Camera: Canon EOS 1D Mark II, Canon EF 100mm f/2.8 USM Macro, Digital RAW, HOYA 58mm HMC-SUPER UV (0)
Exposure: f/22, 3 seconds
Details: Tripod: Yes
More Photo Info: [view]
Photo Version: Original Version
Date Submitted: 2006-09-24 11:08
Viewed: 4101
Points: 6
[Note Guidelines] Photographer's Note
This, familiar to our California friends, is the top side of a Sand Dollar (Dendraster excentricus). A familiar sight on Californian beaches. This little guy I found on Coronado beach, San Diego. What you see is called the "Test" or exoskeleton of the animal. The five petal shaped markings (ambulacra) each with two rows of respiratory podia (feet). At the centre of these petal type markings is the Madreporite, a structure that forms the intake for its water-vascular system........
The reverse side I will post tomorrow.

FeatherBirdLady, peter_stoeckl has marked this note useful
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ThreadThread Starter Messages Updated
To peter_stoeckl: Thank you.RoyHenry 1 11-17 16:02
To FeatherBirdLady: Thank you.RoyHenry 2 09-26 19:04
To cdplayer: Thank you.RoyHenry 1 09-24 19:26
To XOTAELE: Muchas gracias!RoyHenry 1 09-24 19:22
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Critiques [Translate]

Nice capture Roy!
Great coloring on the Sand Dollar!
Good composition!

Original fotografía, preciosos colores.
Saludos, JL.

Nice shot. We get literally HUNDREDS of these on our coast - mostly broken - but some smaller than dimes, others almost four inches in diameter. :)

Hello Roy,
well presented document of great beauty.
You are showing the structures of growth in nature as the basic principles of what we call "beauty" in an impressingly simple, clear and straightforward way.
With thanks, and best regards,

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