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・ Spanish cruiser Isabel II
・ Spanish cruiser Isla de Cuba
・ Spanish cruiser Isla de Luzón
・ Spanish cruiser Navarra
・ Spanish cruiser Navarra (1923)
・ Spanish cruiser Rapido (1889)
・ Spanish cruiser Reina Cristina
・ Spanish cruiser Reina Mercedes
・ Spanish cruiser Tornado
・ Spanish cruiser Velasco
・ Spanish cruiser Vizcaya
・ Spanish cuisine
・ Spanish Cultural Heritage Institute
・ Spanish customary units
・ Spanish Dance Troupe
Spanish dancer
・ Spanish Data Protection Agency
・ Spanish Democratic Socialist Party
・ Spanish destroyer Alcalá Galiano
・ Spanish destroyer Almirante Ferrandiz
・ Spanish destroyer Almirante Ferrándiz
・ Spanish destroyer Furor
・ Spanish destroyer Gravina
・ Spanish destroyer Jorge Juan
・ Spanish destroyer José Luis Díez
・ Spanish destroyer Lepanto
・ Spanish destroyer Plutón
・ Spanish destroyer Sánchez Barcáiztegui
・ Spanish destroyer Terror
・ Spanish determiners


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Spanish dancer : ウィキペディア英語版
Spanish dancer

The Spanish dancer, scientific name ''Hexabranchus sanguineus'' (literally meaning "blood-colored six-gills"), is a dorid nudibranch, a very large and colorful sea slug, a marine gastropod mollusk in the family Hexabranchidae.〔http://www.seaslugforum.net/hexasang.htm Seaslug forum〕
==Description==

The Spanish dancer is a large dorid nudibranch which can grow up to a maximum length of 60cm.〔DELUNEL Anthony, WARREN Lindsay, COROLLA Jean-Pierre, MITEL Cédric, in : DORIS, 17/7/2014 : Hexabranchus sanguineus (Rüppell et Leuckart, 1830), http://doris.ffessm.fr/fiche2.asp?fiche_numero=411〕
However, the commonly observed size is between 20 to 30 cm long.〔http://www.seaslugforum.net/find/hexasang〕
Its body coloration is generally orange-red speckled with multiple small white dots but it also can be uniformly bright red or yellow with red scattered spots.
Its body is soft and flattened, the anterior dorsal portion has a pair of retractable rhinophores and the posterior part has six contractile gills inserted independently in the body. The pair of oral tentacles are constituted by a fin flexible membrane provided with large digital lobes.
In a normal situation when the animal is crawling, the edges of its mantle are curled inwards creating a peripheral blister. If the animal is disturbed, it unfolds its edges and can swim through contractions and undulations of the body to move away from the disturbing element. Its common name, spanish dancer, comes from this particular defense.
Juveniles are rather whitish to yellowish with multiple purplish points and orange rhinophores and gills.

Image:Hexabranchus sanguineus eggs.jpg|The egg ribbon of ''Hexabranchus sanguineus'' in the northwest Hawaiin Islands
Image:Spanish_dancer.jpg|Spanish dancer photographed in daylight, Dahab
Image:Hexabranchus sanguineus 2.jpg|Spanish dancer, a posterior view showing the gill rosette
File:Spanish_dancer_timor.jpg|Encountered at night on the North coast of East Timor


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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