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Sea cucumbers


Sea cucumbers
Photo Information
Copyright: Jean Loup Castaigne (jloup) Silver Note Writer [C: 9 W: 0 N: 30] (131)
Genre: Animals
Medium: Color
Date Taken: 2009-07-02
Categories: Echinoderms
Camera: Canon DIGITAL IXUS 900Ti
Exposure: f/8, 1/60 seconds
Details: (Fill) Flash: Yes
More Photo Info: [view]
Photo Version: Original Version
Theme(s): Underwater Wonder World 4 [view contributor(s)]
Date Submitted: 2009-09-06 20:20
Viewed: 3601
Points: 0
[Note Guidelines] Photographer's Note
Une holothurie est un animal invertébré, au corps mou et oblong, à symétrie radiale, à la peau rugueuse, possédant un cercle de tentacules autour de la bouche. Elle est aussi appelée concombre de mer ou bêche de mer. Il fait partie de l'embranchement des échinodermes et de la classe des holothurides. Il peut atteindre 25 cm de long. Il vit au fond des mers chaudes. Cet animal a la particularité de dégager, pour la plupart, des toxines en cas de stress intense d'attaque ou danger. Ces toxines sont dangereuses, voire mortelles, pour la plupart des poissons et autres animaux marins.
[Source : wikipedia]
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Holothuroidea are a class of marine animals (phylum Echinodermata) with an elongated body and leathery skin, which is found on the sea floor worldwide. Many holothurian species and genera, informally known as sea cucumbers, are targeted for human consumption. The harvested product is also referred to as sea cucumber, or as trepang, bêche-de-mer, balate, or sea slug. The body contains a single, branched gonad. Like all echinoderms, sea cucumbers have an endoskeleton just below the skin, calcified structures that are usually reduced to isolated microscopic ossicles (or sclerietes) joined by connective tissue.
[Source : Wikipedia]


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