【海底忙什麼EP10】血紅海蛞蝓 Hexabranchus Sanguineus

【血紅海蛞蝓 Hexabranchus Sanguineus】

血紅六鰓海蛞蝓是已知最大的裸鰓類動物，體長可達 30 公分以上。

牠們的體色可從橘色到鮮紅，體表散佈小白色斑點，有時體色卻是分布不規則亮紅、黃、橘帶著紅色斑點。血紅六鰓海蛞蝓通常匍匐前行，移動時外套膜最外緣呈現波浪狀皺褶，若牠們受到干擾，外套膜會伸展開游動到水層中，身體不停歇的收縮起伏，企圖迅速離開現場，這時候動作宛如西班牙佛朗明哥舞蹈舞者擺動大片裙擺，這樣的行為使其得名西班牙舞孃，其實是另類的避險之道。

Hexabranchus sanguineus, meaning blood-colored six-gills, is a very large and colorful sea slug which can grow up more than a length of 30 cm.

Their body coloration is generally orange-red speckled with multiple small white dots. They also can be uniformly bright red or yellow with red scattered spots. In a normal situation when the animal is crawling, the edges of its mantle are curled inwards creating wavy folds. 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.